Sequoia gigantea vs Sierra redwood

Sequoia gigantea and Sierra redwood both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sequoia gigantea	Yes	No	No	No
Sierra redwood	Yes	No	No	No

As nouns, Sequoia gigantea and Sierra redwood are synonyms defined as:

Sequoia gigantea and Sierra redwood: extremely lofty evergreen of southern end of western foothills of Sierra Nevada in California; largest living organism

Other synonyms of Sequoia gigantea include big tree, giant sequoia, Sequoia Wellingtonia, Sequoiadendron giganteum.

Sequoia gigantea (noun)	Sierra redwood (noun)
extremely lofty evergreen of southern end of western foothills of Sierra Nevada in California; largest living organism	extremely lofty evergreen of southern end of western foothills of Sierra Nevada in California; largest living organism