theridiid vs comb-footed spider

theridiid and comb-footed spider both are nouns.

Word	Noun	Adjective	Verb	Adverb
theridiid	Yes	No	No	No
comb-footed spider	Yes	No	No	No

As nouns, theridiid and comb-footed spider are synonyms defined as:

theridiid and comb-footed spider: spider having a comb-like row of bristles on each hind foot

theridiid (noun)	comb-footed spider (noun)
spider having a comb-like row of bristles on each hind foot	spider having a comb-like row of bristles on each hind foot