peculiar vs queer

peculiar is not a noun while queer is a noun.

Word	Noun	Adjective	Verb	Adverb
peculiar	No	Yes	No	No
queer	Yes	Yes	Yes	No

As adjectives, peculiar and queer are synonyms defined as:

Other synonyms of peculiar include curious, funny, odd, rum, rummy, singular.

peculiar (noun)	queer (noun)
	offensive term for a homosexual man

peculiar (adjective)	queer (adjective)
characteristic of one only; distinctive or special	homosexual or arousing homosexual desires
unique or specific to a person or thing or category	beyond or deviating from the usual or expected
beyond or deviating from the usual or expected
markedly different from the usual; special

peculiar (verb)	queer (verb)
	put in a dangerous, disadvantageous, or difficult position
	hinder or prevent (the efforts, plans, or desires) of