lygaeid vs lygaeid bug

lygaeid and lygaeid bug both are nouns.

Word	Noun	Adjective	Verb	Adverb
lygaeid	Yes	No	No	No
lygaeid bug	Yes	No	No	No

As nouns, lygaeid and lygaeid bug are synonyms defined as:

lygaeid and lygaeid bug: a true bug: usually bright-colored; pest of cultivated crops and some fruit trees

lygaeid (noun)	lygaeid bug (noun)
a true bug: usually bright-colored; pest of cultivated crops and some fruit trees	a true bug: usually bright-colored; pest of cultivated crops and some fruit trees