beta wave vs beta rhythm

beta wave and beta rhythm both are nouns.

Word	Noun	Adjective	Verb	Adverb
beta wave	Yes	No	No	No
beta rhythm	Yes	No	No	No

As nouns, beta wave and beta rhythm are synonyms defined as:

beta wave and beta rhythm: the normal brainwave in the encephalogram of a person who is awake and alert; occurs with a frequency between 12 and 30 hertz

beta wave (noun)	beta rhythm (noun)
the normal brainwave in the encephalogram of a person who is awake and alert; occurs with a frequency between 12 and 30 hertz	the normal brainwave in the encephalogram of a person who is awake and alert; occurs with a frequency between 12 and 30 hertz