Anaerobic exercise and Physical exertion

Anaerobic exercise noun - Exercise that builds muscles through tension.

Physical exertion and anaerobic exercise are semantically related. In some cases you can use "Physical exertion" instead a noun phrase "Anaerobic exercise".

Physical exertion noun - The activity of exerting your muscles in various ways to keep fit.

Anaerobic exercise and physical exertion are semantically related. Sometimes you can replace phrase "Anaerobic exercise" with "Physical exertion", this phrases are similar.