This is the 17635th most frequent Korean word.
세쿼이아
Sequoia: A type of large, tall redwood tree.
In this sentence, '세쿼이아' is used to refer to a specific type of tree, the sequoia.
나는 세쿼이아 나무를 숲에서 봤어요.
I saw a sequoia tree in the forest.
Here, '세쿼이아' is used generically to describe the tree species and its characteristics.
세쿼이아는 오래 살고 매우 큰 나무로 유명합니다.
Sequoias are famous for living a long time and being very large trees.
In this context, '세쿼이아' is part of a proper noun referring to the Sequoia National Park.