floe vs ice floe

floe and ice floe both are nouns.

Word	Noun	Adjective	Verb	Adverb
floe	Yes	No	No	No
ice floe	Yes	No	No	No

As nouns, floe and ice floe are synonyms defined as:

floe and ice floe: a flat mass of ice (smaller than an ice field) floating at sea

floe (noun)	ice floe (noun)
a flat mass of ice (smaller than an ice field) floating at sea	a flat mass of ice (smaller than an ice field) floating at sea