different between eccentricities vs quirk

English

eccentricities

First attested in the 1540s. Of uncertain origin.

quirk (plural quirks)

an idiosyncrasy; a slight glitch, mannerism; something unusual about the manner or style of something or someone
The car steers cleanly, but the gearshift has a few quirks.
(architecture) An acute angle dividing a molding; a groove that runs lengthwise between the upper part of a moulding and a soffit
(archaic) A quibble, evasion, or subterfuge.
- Had you no quirk / To avoid gullage, sir, by such a creature?

quirk (third-person singular simple present quirks, present participle quirking, simple past and past participle quirked)

(transitive, intransitive) To move with a wry jerk.
He quirked an eyebrow.
The corners of her mouth quirked.
(transitive, architecture) To furnish with a quirk or channel.
(intransitive, archaic) To use verbal tricks or quibbles
- 1820, Percy Bysshe Shelley, Oedipus Tyrannus; Or, Swellfoot The Tyrant: A Tragedy in Two Acts:
  I have stung her and wrung her,
  The venom is working;—
  And if you had hung her
  With canting and quirking,
  She could not be deader than she will be soon

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