ratch vs rachet

ratch and rachet both are nouns.

Word	Noun	Adjective	Verb	Adverb
ratch	Yes	No	No	No
rachet	Yes	No	No	No

As nouns, ratch and rachet are synonyms defined as:

ratch and rachet: mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction

Other synonyms of ratch include ratchet.

ratch (noun)	rachet (noun)
mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction	mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction