hanging vs executing

hanging and executing both are nouns.

Word	Noun	Adjective	Verb	Adverb
hanging	Yes	No	No	No
executing	Yes	No	No	No

As nouns, executing is a hypernym of hanging; that is, executing is a word with a broader meaning than hanging:

hanging: a form of capital punishment; victim is suspended by the neck from a gallows or gibbet until dead
executing: putting a condemned person to death

Other hypernyms of hanging include capital punishment, death penalty, execution.

hanging (noun)	executing (noun)
the act of suspending something (hanging it from above so it moves freely)	putting a condemned person to death
a form of capital punishment; victim is suspended by the neck from a gallows or gibbet until dead
decoration that is hung (as a tapestry) on a wall or over a window