satsuma vs satsuma tree

satsuma and satsuma tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
satsuma	Yes	No	No	No
satsuma tree	Yes	No	No	No

As nouns, satsuma and satsuma tree are synonyms defined as:

satsuma and satsuma tree: a variety of mandarin orange, known commonly as cold hardy mandarin, Christmas orange, or tangerine

satsuma (noun)	satsuma tree (noun)
medium-sized largely seedless mandarin orange with thin smooth skin	a variety of mandarin orange, known commonly as cold hardy mandarin, Christmas orange, or tangerine
a variety of mandarin orange, known commonly as cold hardy mandarin, Christmas orange, or tangerine