rose vs rosaceous

rose is a noun but rosaceous is not a noun.

Word	Noun	Adjective	Verb	Adverb
rose	Yes	Yes	No	No
rosaceous	No	Yes	No	No

As adjectives, rose and rosaceous are synonyms defined as:

Other synonyms of rose include roseate.

rose (noun)	rosaceous (noun)
a dusty pink color
pinkish table wine from red grapes whose skins were removed after fermentation began
any of many shrubs of the genus Rosa that bear roses

rose (adjective)	rosaceous (adjective)
of something having a dusty purplish pink color	of or pertaining to or characteristic of plants of the family Rosaceae
	of something having a dusty purplish pink color