leaf vs dandelion green

leaf and dandelion green both are nouns.

Word	Noun	Adjective	Verb	Adverb
leaf	Yes	No	Yes	No
dandelion green	Yes	No	No	No

As nouns, dandelion green is a hyponym of leaf; that is, dandelion green is a word with a more specific, narrower meaning than leaf:

leaf (noun)	dandelion green (noun)
hinged or detachable flat section (as of a table or door)	edible leaves of the common dandelion collected from the wild; used in salads and in making wine
a sheet of any written or printed material (especially in a manuscript or book)	the foliage of the dandelion plant
the main organ of photosynthesis and transpiration in higher plants

leaf (verb)	dandelion green (verb)
produce leaves, of plants
turn over pages
look through a book or other written material