alpha rhythm vs alpha wave

alpha rhythm and alpha wave both are nouns.

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

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

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

alpha rhythm (noun)	alpha wave (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