grapefruit vs grapefruit

grapefruit and grapefruit both are nouns.

Word	Noun	Adjective	Verb	Adverb
grapefruit	Yes	No	No	No
grapefruit	Yes	No	No	No

grapefruit (noun)	grapefruit (noun)
large yellow fruit with somewhat acid juicy pulp; usual serving consists of a half	large yellow fruit with somewhat acid juicy pulp; usual serving consists of a half
citrus tree bearing large round edible fruit having a thick yellow rind and juicy somewhat acid pulp	citrus tree bearing large round edible fruit having a thick yellow rind and juicy somewhat acid pulp