walkway vs flagging

walkway and flagging both are nouns.

Word	Noun	Adjective	Verb	Adverb
walkway	Yes	No	No	No
flagging	Yes	Yes	No	No

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

Other hyponyms of walkway include ambulatory, boardwalk, catwalk, mall, promenade, pavement, sidewalk, skywalk.

walkway (noun)	flagging (noun)
a path set aside for walking	a walk of flagstones
	flagstones collectively

walkway (adjective)	flagging (adjective)
	weak from exhaustion