round kumquat vs marumi

round kumquat and marumi both are nouns.

Word	Noun	Adjective	Verb	Adverb
round kumquat	Yes	No	No	No
marumi	Yes	No	No	No

As nouns, round kumquat and marumi are synonyms defined as:

Other synonyms of round kumquat include Fortunella japonica, marumi kumquat.

round kumquat (noun)	marumi (noun)
shrub bearing round-fruited kumquats	shrub bearing round-fruited kumquats