tetrachloroethylene vs tetrachlorethylene

tetrachloroethylene and tetrachlorethylene both are nouns.

Word	Noun	Adjective	Verb	Adverb
tetrachloroethylene	Yes	No	No	No
tetrachlorethylene	Yes	No	No	No

As nouns, tetrachloroethylene and tetrachlorethylene are synonyms defined as:

tetrachloroethylene and tetrachlorethylene: anthelmintic agent used against hookworm and other nematodes

Other synonyms of tetrachloroethylene include carbon dichloride, ethylene tetrachloride.

tetrachloroethylene (noun)	tetrachlorethylene (noun)
anthelmintic agent used against hookworm and other nematodes	anthelmintic agent used against hookworm and other nematodes