stick insect vs walkingstick

stick insect and walkingstick both are nouns.

Word	Noun	Adjective	Verb	Adverb
stick insect	Yes	No	No	No
walkingstick	Yes	No	No	No

As nouns, stick insect and walkingstick are synonyms defined as:

stick insect and walkingstick: any of various mostly tropical insects having long twiglike bodies

Other synonyms of stick insect include walking stick.

stick insect (noun)	walkingstick (noun)
any of various mostly tropical insects having long twiglike bodies	any of various mostly tropical insects having long twiglike bodies