London plane vs platan

London plane and platan both are nouns.

Word	Noun	Adjective	Verb	Adverb
London plane	Yes	No	No	No
platan	Yes	No	No	No

As nouns, platan is a hypernym of London plane; that is, platan is a word with a broader meaning than London plane:

London plane: very large fast-growing tree much planted as a street tree
platan: any of several trees of the genus Platanus having thin pale bark that scales off in small plates and lobed leaves and ball-shaped heads of fruits

Other hypernyms of London plane include plane tree, sycamore.

London plane (noun)	platan (noun)
very large fast-growing tree much planted as a street tree	any of several trees of the genus Platanus having thin pale bark that scales off in small plates and lobed leaves and ball-shaped heads of fruits