boa vs constrictor

boa and constrictor both are nouns.

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

As nouns, constrictor is a hypernym of boa; that is, constrictor is a word with a broader meaning than boa:

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

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