mulberry tree vs mulberry

mulberry tree and mulberry both are nouns.

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

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

mulberry tree and mulberry: any of several trees of the genus Morus having edible fruit that resembles the blackberry

mulberry tree (noun)	mulberry (noun)
any of several trees of the genus Morus having edible fruit that resembles the blackberry	sweet usually dark purple blackberry-like fruit of any of several mulberry trees of the genus Morus
	any of several trees of the genus Morus having edible fruit that resembles the blackberry