pepper vs Capsicum

pepper and Capsicum both are nouns.

Word	Noun	Adjective	Verb	Adverb
pepper	Yes	No	Yes	No
Capsicum	Yes	No	No	No

pepper (noun)	Capsicum (noun)
pungent seasoning from the berry of the common pepper plant of East India; use whole or ground	chiefly tropical perennial shrubby plants having many-seeded fruits: sweet and hot peppers
sweet and hot varieties of fruits of plants of the genus Capsicum
any of various tropical plants of the genus Capsicum bearing peppers
climber having dark red berries (peppercorns) when fully ripe; southern India and Sri Lanka; naturalized in northern Burma and Assam

pepper (verb)	Capsicum (verb)
attack and bombard with or as if with missiles
add pepper to