traffic island vs safety isle

traffic island and safety isle both are nouns.

Word	Noun	Adjective	Verb	Adverb
traffic island	Yes	No	No	No
safety isle	Yes	No	No	No

As nouns, traffic island and safety isle are synonyms defined as:

traffic island and safety isle: a curbed area in a roadway from which traffic is excluded; provides safe area for pedestrians

Other synonyms of traffic island include safety island, safety zone.

traffic island (noun)	safety isle (noun)
a curbed area in a roadway from which traffic is excluded; provides safe area for pedestrians	a curbed area in a roadway from which traffic is excluded; provides safe area for pedestrians