constrictor vs boa

constrictor and boa both are nouns.

Word	Noun	Adjective	Verb	Adverb
constrictor	Yes	No	No	No
boa	Yes	No	No	No

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

constrictor: any of various large nonvenomous snakes that kill their prey by crushing it in its coils
boa: any of several chiefly tropical constrictors with vestigial hind limbs

constrictor (noun)	boa (noun)
any of various large nonvenomous snakes that kill their prey by crushing it in its coils	any of several chiefly tropical constrictors with vestigial hind limbs
	a long thin fluffy scarf of feathers or fur