courtyard vs forecourt

courtyard and forecourt both are nouns.

Word	Noun	Adjective	Verb	Adverb
courtyard	Yes	No	No	No
forecourt	Yes	No	No	No

As nouns, forecourt is a hyponym of courtyard; that is, forecourt is a word with a more specific, narrower meaning than courtyard:

courtyard: an area wholly or partly surrounded by walls or buildings
forecourt: the outer or front court of a building or of a group of buildings

Other hyponyms of courtyard include atrium, bailey, cloister, food court, parvis.

courtyard (noun)	forecourt (noun)
an area wholly or partly surrounded by walls or buildings	the outer or front court of a building or of a group of buildings