queerness vs lesbianism

queerness and lesbianism both are nouns.

Word	Noun	Adjective	Verb	Adverb
queerness	Yes	No	No	No
lesbianism	Yes	No	No	No

As nouns, lesbianism is a hyponym of queerness; that is, lesbianism is a word with a more specific, narrower meaning than queerness:

queerness: a sexual attraction to (or sexual relations with) persons of the same sex
lesbianism: female homosexuality

Other hyponyms of queerness include inversion, sexual inversion, sapphism, paederasty, pederasty.

queerness (noun)	lesbianism (noun)
a sexual attraction to (or sexual relations with) persons of the same sex	female homosexuality
a strange attitude or habit