caregiver vs primary care provider

caregiver and primary care provider both are nouns.

Word	Noun	Adjective	Verb	Adverb
caregiver	Yes	No	No	No
primary care provider	Yes	No	No	No

As nouns, caregiver and primary care provider are synonyms defined as:

caregiver and primary care provider: a person who helps in identifying or preventing or treating illness or disability

Other synonyms of caregiver include health care provider, health professional, PCP.

caregiver (noun)	primary care provider (noun)
a person who is responsible for attending to the needs of a child or dependent adult	a person who helps in identifying or preventing or treating illness or disability
a person who helps in identifying or preventing or treating illness or disability