safety zone vs traffic island

safety zone and traffic island both are nouns.

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

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

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

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

safety zone (noun)	traffic island (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