snap ring vs carabiner

snap ring and carabiner both are nouns.

Word	Noun	Adjective	Verb	Adverb
snap ring	Yes	No	No	No
carabiner	Yes	No	No	No

As nouns, snap ring and carabiner are synonyms defined as:

snap ring and carabiner: an oblong metal ring with a spring clip; used in mountaineering to attach a rope to a piton or to connect two ropes

Other synonyms of snap ring include karabiner.

snap ring (noun)	carabiner (noun)
an oblong metal ring with a spring clip; used in mountaineering to attach a rope to a piton or to connect two ropes	an oblong metal ring with a spring clip; used in mountaineering to attach a rope to a piton or to connect two ropes