Communications satellite and Weather satellite

Communications satellite noun - An artificial satellite that relays signals back to earth; moves in a geostationary orbit.

Weather satellite and communications satellite are semantically related. In some cases you can use "Weather satellite" instead a noun phrase "Communications satellite".

Weather satellite noun - A satellite that transmits frequent picture of the earth below.

Communications satellite and weather satellite are semantically related. You can use "Communications satellite" instead a noun phrase "Weather satellite".