karabiner vs snap ring

karabiner and snap ring both are nouns.

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

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

karabiner and snap ring: 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 karabiner include carabiner.

karabiner (noun)	snap ring (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