Astronomical telescope and Radio telescope

Astronomical telescope noun - Any telescope designed to collect and record electromagnetic radiation from cosmic sources.

Radio telescope and astronomical telescope are semantically related. In some cases you can replace phrase "Radio telescope" with "Astronomical telescope", this phrases are similar.

Radio telescope noun - Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extraterrestrial sources.

Astronomical telescope and radio telescope are semantically related. You can use "Astronomical telescope" instead a noun phrase "Radio telescope".