strawberry tree vs arbutus

strawberry tree and arbutus both are nouns.

Word	Noun	Adjective	Verb	Adverb
strawberry tree	Yes	No	No	No
arbutus	Yes	No	No	No

As nouns, arbutus is a hypernym of strawberry tree; that is, arbutus is a word with a broader meaning than strawberry tree:

strawberry tree: small evergreen European shrubby tree bearing many-seeded scarlet berries that are edible but bland; of Ireland, southern Europe, Asia Minor
arbutus: any of several evergreen shrubs of the genus Arbutus of temperate Europe and America

strawberry tree (noun)	arbutus (noun)
small evergreen European shrubby tree bearing many-seeded scarlet berries that are edible but bland; of Ireland, southern Europe, Asia Minor	any of several evergreen shrubs of the genus Arbutus of temperate Europe and America