flame durrajong vs bottle-tree

flame durrajong and bottle-tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
flame durrajong	Yes	No	No	No
bottle-tree	Yes	No	No	No

As nouns, bottle-tree is a hypernym of flame durrajong; that is, bottle-tree is a word with a broader meaning than flame durrajong:

flame durrajong: south Australian tree having panicles of brilliant scarlet flowers
bottle-tree: an Australian tree of the genus Brachychiton

Other hypernyms of flame durrajong include bottle tree.

flame durrajong (noun)	bottle-tree (noun)
south Australian tree having panicles of brilliant scarlet flowers	an Australian tree of the genus Brachychiton