death penalty vs executing

death penalty and executing both are nouns.

Word	Noun	Adjective	Verb	Adverb
death penalty	Yes	No	No	No
executing	Yes	No	No	No

As nouns, death penalty and executing are synonyms defined as:

Other synonyms of death penalty include capital punishment, execution.

death penalty (noun)	executing (noun)
putting a condemned person to death	putting a condemned person to death