nuclease vs exonuclease

nuclease and exonuclease both are nouns.

Word	Noun	Adjective	Verb	Adverb
nuclease	Yes	No	No	No
exonuclease	Yes	No	No	No

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

nuclease: general term for enzymes that catalyze the hydrolysis of nucleic acid by cleaving chains of nucleotides into smaller units
exonuclease: a nuclease that releases one nucleotide at a time (serially) beginning at one of a nucleic acid

Other hyponyms of nuclease include endonuclease.

nuclease (noun)	exonuclease (noun)
general term for enzymes that catalyze the hydrolysis of nucleic acid by cleaving chains of nucleotides into smaller units	a nuclease that releases one nucleotide at a time (serially) beginning at one of a nucleic acid