silver thatch vs thatch tree

silver thatch and thatch tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
silver thatch	Yes	No	No	No
thatch tree	Yes	No	No	No

As nouns, silver thatch and thatch tree are synonyms defined as:

silver thatch and thatch tree: small palm of southern Florida and West Indies closely resembling the silvertop palmetto

Other synonyms of silver thatch include broom palm, thatch palm, Thrinax parviflora.

silver thatch (noun)	thatch tree (noun)
small palm of southern Florida and West Indies closely resembling the silvertop palmetto	small palm of southern Florida and West Indies closely resembling the silvertop palmetto
small stocky fan palm of southern Florida and Cuba