Health care and Primary care

Health care noun - The preservation of mental and physical health by preventing or treating illness through services offered by the health profession.

Primary care and health care are semantically related In some cases you can replace phrase "Primary care" with "Health care", this phrases are similar.

Primary care noun - The medical care received on first contact with the medical system (before being referred elsewhere).

Health care and primary care are semantically related in first-contact medical care topic. You can use "Health care" instead a noun phrase "Primary care".