pseudoscience vs fallacy

pseudoscience and fallacy both are nouns.

Word	Noun	Adjective	Verb	Adverb
pseudoscience	Yes	No	No	No
fallacy	Yes	No	No	No

As nouns, fallacy is a hypernym of pseudoscience; that is, fallacy is a word with a broader meaning than pseudoscience:

pseudoscience: an activity resembling science but based on fallacious assumptions
fallacy: a misconception resulting from incorrect reasoning

Other hypernyms of pseudoscience include false belief.

pseudoscience (noun)	fallacy (noun)
an activity resembling science but based on fallacious assumptions	a misconception resulting from incorrect reasoning