different between package vs mailroom

English

Equivalent to pack + -age. Possibly influenced by Anglo-Latin paccagium or Old French pacquage.

(UK, General Australian, US, Canada) IPA^(key): /?pæk?d?/
- California, US: IPA^(key): [?p?ak?d??]

package (countable and uncountable, plural packages)

Something which is packed, a parcel, a box, an envelope.
Something which consists of various components, such as a piece of computer software.
Did you test the software package to ensure completeness?
(software) A piece of software which has been prepared in such a way that it can be installed with a package manager.
(uncountable, archaic) The act of packing something.
Something resembling a package.
A package holiday.
A football formation.
the "dime" defensive package
For third and short, they're going to bring in their jumbo package.
(euphemistic, vulgar) The male genitalia.
- 2013, Velvet Carter, Blissfully Yours (page 93)
  The women usually wore bikini tops with shorts, swimsuits underneath cover-ups or just swimsuits. Men came in various types of trunks, from traditional boxers, to Speedos, to G-string trunks that showcased their packages.
(uncountable, historical) A charge made for packing goods.
(journalism) A group of related stories spread over several pages.

package (third-person singular simple present packages, present participle packaging, simple past and past participle packaged)

To pack or bundle something.
To travel on a package holiday.
To prepare (a book, a television series, etc.), including all stages from research to production, in order to sell the result to a publisher or broadcaster.

“package, n.”, in OED Online ?, Oxford, Oxfordshire: Oxford University Press, January 2015

mail +? room

mailroom (plural mailrooms)

A room used for receiving and (usually) sending mail.
- 2016, VOA Learning English (public domain)
  Oh, Pete. This is not the gym. — That’s right, Anna. This is the mailroom.

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