wasp vs hymenopterous insect

wasp and hymenopterous insect both are nouns.

Word	Noun	Adjective	Verb	Adverb
wasp	Yes	No	No	No
hymenopterous insect	Yes	No	No	No

As nouns, hymenopterous insect is a hypernym of wasp; that is, hymenopterous insect is a word with a broader meaning than wasp:

wasp: social or solitary hymenopterans typically having a slender body with the abdomen attached by a narrow stalk and having a formidable sting
hymenopterous insect: insects having two pairs of membranous wings and an ovipositor specialized for stinging or piercing

Other hypernyms of wasp include hymenopter, hymenopteran, hymenopteron.

wasp (noun)	hymenopterous insect (noun)
social or solitary hymenopterans typically having a slender body with the abdomen attached by a narrow stalk and having a formidable sting	insects having two pairs of membranous wings and an ovipositor specialized for stinging or piercing