California redwood vs coast redwood

California redwood and coast redwood both are nouns.

Word	Noun	Adjective	Verb	Adverb
California redwood	Yes	No	No	No
coast redwood	Yes	No	No	No

As nouns, California redwood and coast redwood are synonyms defined as:

California redwood and coast redwood: lofty evergreen of United States coastal foothills from Oregon to Big Sur; it flourishes in wet, rainy, foggy habitats

Other synonyms of California redwood include Sequoia sempervirens.

California redwood (noun)	coast redwood (noun)
lofty evergreen of United States coastal foothills from Oregon to Big Sur; it flourishes in wet, rainy, foggy habitats	lofty evergreen of United States coastal foothills from Oregon to Big Sur; it flourishes in wet, rainy, foggy habitats