California redwood vs Sequoia sempervirens

California redwood and Sequoia sempervirens both are nouns.

Word	Noun	Adjective	Verb	Adverb
California redwood	Yes	No	No	No
Sequoia sempervirens	Yes	No	No	No

As nouns, California redwood and Sequoia sempervirens are synonyms defined as:

California redwood and Sequoia sempervirens: 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 coast redwood.

California redwood (noun)	Sequoia sempervirens (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