queer vs peculiar

queer is a noun but peculiar is not a noun.

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

As adjectives, queer and peculiar are synonyms defined as:

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

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

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

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