physical therapy vs modality

physical therapy and modality both are nouns.

Word	Noun	Adjective	Verb	Adverb
physical therapy	Yes	No	No	No
modality	Yes	No	No	No

physical therapy (noun)	modality (noun)
therapy that uses physical agents: exercise and massage and other modalities	a method of therapy that involves physical or electrical therapeutic treatment
	a particular sense
	a classification of propositions on the basis of whether they claim necessity or possibility or impossibility
	verb inflections that express how the action or state is conceived by the speaker