liberty vs shore leave

liberty and shore leave both are nouns.

Word	Noun	Adjective	Verb	Adverb
liberty	Yes	No	No	No
shore leave	Yes	No	No	No

As nouns, liberty and shore leave are synonyms defined as:

liberty (noun)	shore leave (noun)
an act of undue intimacy	leave granted to a sailor or naval officer
immunity from arbitrary exercise of authority: political independence
freedom of choice
personal freedom from servitude or confinement or oppression
leave granted to a sailor or naval officer