compound pendulum vs physical pendulum

compound pendulum and physical pendulum both are nouns.

Word	Noun	Adjective	Verb	Adverb
compound pendulum	Yes	No	No	No
physical pendulum	Yes	No	No	No

As nouns, compound pendulum and physical pendulum are synonyms defined as:

compound pendulum and physical pendulum: pendulum consisting of an actual object allowed to rotate freely around a horizontal axis

compound pendulum (noun)	physical pendulum (noun)
pendulum consisting of an actual object allowed to rotate freely around a horizontal axis	pendulum consisting of an actual object allowed to rotate freely around a horizontal axis