fricative vs spirant

fricative and spirant both are nouns.

Word	Noun	Adjective	Verb	Adverb
fricative	Yes	Yes	No	No
spirant	Yes	Yes	No	No

As adjectives, fricative and spirant are synonyms defined as:

fricative and spirant: of speech sounds produced by forcing air through a constricted passage (as `f', `s', `z', or `th' in both `thin' and `then')

Other synonyms of fricative include continuant, sibilant, strident.

As nouns, fricative and spirant are synonyms defined as:

fricative and spirant: a continuant consonant produced by breath moving against a narrowing of the vocal tract

Other synonyms of fricative include fricative consonant.

fricative (noun)	spirant (noun)
a continuant consonant produced by breath moving against a narrowing of the vocal tract	a continuant consonant produced by breath moving against a narrowing of the vocal tract

fricative (adjective)	spirant (adjective)
of speech sounds produced by forcing air through a constricted passage (as `f', `s', `z', or `th' in both `thin' and `then')	of speech sounds produced by forcing air through a constricted passage (as `f', `s', `z', or `th' in both `thin' and `then')