sun rose vs sunrose

sun rose and sunrose both are nouns.

Word	Noun	Adjective	Verb	Adverb
sun rose	Yes	No	No	No
sunrose	Yes	No	No	No

As nouns, sun rose and sunrose are synonyms defined as:

sun rose and sunrose: any plant of the genus Helianthemum; vigorous plants of stony alpine meadows and dry scrub regions

Other synonyms of sun rose include helianthemum.

sun rose (noun)	sunrose (noun)
any plant of the genus Helianthemum; vigorous plants of stony alpine meadows and dry scrub regions	any plant of the genus Helianthemum; vigorous plants of stony alpine meadows and dry scrub regions