different between purpose vs principle

English

Pronunciation

• (General American) IPA^(key): /?p?p?s/
• (Received Pronunciation) IPA^(key): /?p??p?s/
• Rhymes: -??(?)p?s

Etymology 1

From Middle English purpos, from Old French purposer (“to propose”), from Latin pr? (“forth”) + pono, hence Latin propono, proponere, with conjugation altered based on poser.

Noun

purpose (countable and uncountable, plural purposes)

1. An objective to be reached; a target; an aim; a goal.
2. A result that is desired; an intention.
3. The act of intending to do something; resolution; determination.
   • 2013, Phil McNulty, "[2]", BBC Sport, 1 September 2013:

     United began with more purpose in the early phase of the second half and Liverpool were grateful for Glen Johnson's crucial block from Young's goalbound shot.
4. The subject of discourse; the point at issue.

   (Can we find and add a quotation of Spenser to this entry?)

5. The reason for which something is done, or the reason it is done in a particular way.

6. (obsolete) Instance; example.

Synonyms

• (target): aim, goal, object, target; See also Thesaurus:goal
• (intention): aim, plan, intention; See also Thesaurus:intention
• (determination): determination, intention, resolution
• (subject of discourse): matter, subject, topic
• (reason for doing something): reason

Hyponyms

• common purpose
• metapurpose

Derived terms

Related terms

Translations

Etymology 2

From Middle English purposen, from Old French purposer (“to propose”).

Verb

purpose (third-person singular simple present purposes, present participle purposing, simple past and past participle purposed)

1. (transitive) To have set as one's purpose; resolve to accomplish; intend; plan.
2. (transitive, passive) To design for some purpose. (Can we add an example for this sense?)
3. (obsolete, intransitive) To discourse.

   (Can we find and add a quotation of Edmund Spenser to this entry?)

Derived terms

• purposed
• purposer
• purposive
• on purpose

Synonyms

• (have set as one's purpose): aim, intend, mean, plan, set out
• (designed for some purpose): intended

Translations

References

• “purpose” in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present.
• “purpose”, in The American Heritage Dictionary of the English Language, 4th edition, Boston, Mass.: Houghton Mifflin, 2000, ?ISBN
• "purpose" in WordNet 2.0, Princeton University, 2003.

English

Etymology

Borrowed from Old French principe, from Latin pr?ncipium (“beginning, foundation”), from pr?nceps (“first”); see prince.

Pronunciation

• IPA^(key): /?p??ns?p?l/, /?p??ns?p?l/
• Hyphenation: prin?ci?ple
• Homophone: principal

Noun

principle (plural principles)

1. A fundamental assumption or guiding belief.

   • Let us consider ‘my dog is asleep on the floor’ again. Frege thinks that this sentence can be analyzed in various different ways. Instead of treating it as expressing the application of __ is asleep on the floor to my dog, we can think of it as expressing the application of the concept
          my dog is asleep on __
     to the object
          the floor
     (see Frege 1919). Frege recognizes what is now a commonplace in the logical analysis of natural language. We can attribute more than one logical form to a single sentence. Let us call this the principle of multiple analyses. Frege does not claim that the principle always holds, but as we shall see, modern type theory does claim this.

2. A rule used to choose among solutions to a problem.

3. (sometimes pluralized) Moral rule or aspect.

   I don't doubt your principles.

   You are clearly a person of principle.

   It's the principle of the thing; I won't do business with someone I can't trust.

4. (physics) A rule or law of nature, or the basic idea on how the laws of nature are applied.

   Bernoulli's Principle

   The Pauli Exclusion Principle prevents two fermions from occupying the same state.

   The principle of the internal combustion engine

5. A fundamental essence, particularly one producing a given quality.
   • 1845, William Gregory, Outlines of Chemistry

     Cathartine is the bitter, purgative principle of senna.

6. (obsolete) A beginning.
7. A source, or origin; that from which anything proceeds; fundamental substance or energy; primordial substance; ultimate element, or cause.
   • 1663, John Tillotson, The Wisdom of Being Religious

     The soul of man is an active principle.

8. An original faculty or endowment.
   • 1828, Dugal Stewart, The Philosophy of the Active and Moral Powers of Man

     those active principles whose direct and ultimate object is the communication either of enjoyment or suffering

Usage notes

• Principle ("moral rule"), as a noun, is often confused with principal, which can be an adjective ("most important") or a noun ("school principal"). A memory aid to avoid this confusion is: "The principal alphabetic principle places A before E".

Synonyms

• (moral rule or aspect): tenet

Derived terms

Related terms

• prince
• principal
• principality

Translations

Verb

principle (third-person singular simple present principles, present participle principling, simple past and past participle principled)

1. (transitive) To equip with principles; to establish, or fix, in certain principles; to impress with any tenet or rule of conduct.

   • Let an enthusiast be principled that he or his teacher is inspired.

Further reading

• principle in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• principle in The Century Dictionary, New York, N.Y.: The Century Co., 1911.