Capparis spinosa vs common caper

Capparis spinosa and common caper both are nouns.

Word	Noun	Adjective	Verb	Adverb
Capparis spinosa	Yes	No	No	No
common caper	Yes	No	No	No

As nouns, Capparis spinosa and common caper are synonyms defined as:

Capparis spinosa and common caper: prostrate spiny shrub of the Mediterranean region cultivated for its greenish flower buds which are pickled

Capparis spinosa (noun)	common caper (noun)
prostrate spiny shrub of the Mediterranean region cultivated for its greenish flower buds which are pickled	prostrate spiny shrub of the Mediterranean region cultivated for its greenish flower buds which are pickled