alpha wave vs alpha rhythm

alpha wave and alpha rhythm both are nouns.

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

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

alpha wave and alpha rhythm: the normal brainwave in the electroencephalogram of a person who is awake but relaxed; occurs with a frequency of 8-12 hertz

alpha wave (noun)	alpha rhythm (noun)
the normal brainwave in the electroencephalogram of a person who is awake but relaxed; occurs with a frequency of 8-12 hertz	the normal brainwave in the electroencephalogram of a person who is awake but relaxed; occurs with a frequency of 8-12 hertz