theism vs pantheism

theism and pantheism both are nouns.

Word	Noun	Adjective	Verb	Adverb
theism	Yes	No	No	No
pantheism	Yes	No	No	No

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

theism: the doctrine or belief in the existence of a God or gods
pantheism: the doctrine or belief that God is the universe and its phenomena (taken or conceived of as a whole) or the doctrine that regards the universe as a manifestation of God

Other hyponyms of theism include monotheism, polytheism, panentheism, pandeism.

theism (noun)	pantheism (noun)
the doctrine or belief in the existence of a God or gods	the doctrine or belief that God is the universe and its phenomena (taken or conceived of as a whole) or the doctrine that regards the universe as a manifestation of God
	(rare) worship that admits or tolerates all gods