pan gravy vs gravy

pan gravy and gravy both are nouns.

Word	Noun	Adjective	Verb	Adverb
pan gravy	Yes	No	No	No
gravy	Yes	No	No	No

As nouns, pan gravy and gravy are synonyms defined as:

pan gravy and gravy: the seasoned but not thickened juices that drip from cooking meats; often a little water is added

pan gravy (noun)	gravy (noun)
the seasoned but not thickened juices that drip from cooking meats; often a little water is added	a sudden happening that brings good fortune (as a sudden opportunity to make money)
	the seasoned but not thickened juices that drip from cooking meats; often a little water is added
	a sauce made by adding stock, flour, or other ingredients to the juice and fat that drips from cooking meats