Sequoiadendron giganteum vs Sequoia Wellingtonia

Sequoiadendron giganteum and Sequoia Wellingtonia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sequoiadendron giganteum	Yes	No	No	No
Sequoia Wellingtonia	Yes	No	No	No

As nouns, Sequoiadendron giganteum and Sequoia Wellingtonia are synonyms defined as:

Sequoiadendron giganteum and Sequoia Wellingtonia: extremely lofty evergreen of southern end of western foothills of Sierra Nevada in California; largest living organism

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

Sequoiadendron giganteum (noun)	Sequoia Wellingtonia (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