bus vs network topology

bus and network topology both are nouns.

Word	Noun	Adjective	Verb	Adverb
bus	Yes	No	Yes	No
network topology	Yes	No	No	No

As nouns, network topology is a hypernym of bus; that is, network topology is a word with a broader meaning than bus:

Other hypernyms of bus include topology.

bus (noun)	network topology (noun)
a vehicle carrying many passengers; used for public transport	the configuration of a communication network
a car that is old and unreliable
an electrical conductor that makes a common connection between several circuits
the topology of a network whose components are connected by a busbar

bus (verb)	network topology (verb)
remove used dishes from the table in restaurants
ride in a bus
send or move around by bus