queer vs curious

queer is a noun but curious is not a noun.

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

As adjectives, queer and curious are synonyms defined as:

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

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

queer (adjective)	curious (adjective)
homosexual or arousing homosexual desires	eager to investigate and learn or learn more (sometimes about others' concerns)
beyond or deviating from the usual or expected	beyond or deviating from the usual or expected

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