carabiner vs karabiner

carabiner and karabiner both are nouns.

Word	Noun	Adjective	Verb	Adverb
carabiner	Yes	No	No	No
karabiner	Yes	No	No	No

As nouns, carabiner and karabiner are synonyms defined as:

carabiner and karabiner: 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 carabiner include snap ring.

carabiner (noun)	karabiner (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