sadism vs sadomasochism

sadism and sadomasochism both are nouns.

Word	Noun	Adjective	Verb	Adverb
sadism	Yes	No	No	No
sadomasochism	Yes	No	No	No

As nouns, sadomasochism is a hyponym of sadism; that is, sadomasochism is a word with a more specific, narrower meaning than sadism:

sadism: sexual pleasure obtained by inflicting harm (physical or psychological) on others
sadomasochism: sadism and masochism combined in one person

sadism (noun)	sadomasochism (noun)
sexual pleasure obtained by inflicting harm (physical or psychological) on others	sadism and masochism combined in one person