pulse counter vs tabulator

pulse counter and tabulator both are nouns.

Word	Noun	Adjective	Verb	Adverb
pulse counter	Yes	No	No	No
tabulator	Yes	No	No	No

As nouns, tabulator is a hypernym of pulse counter; that is, tabulator is a word with a broader meaning than pulse counter:

pulse counter: an electronic counter that counts the number of electric pulses
tabulator: a calculator that keeps a record of the number of times something happens

Other hypernyms of pulse counter include counter.

pulse counter (noun)	tabulator (noun)
an electronic counter that counts the number of electric pulses	a calculator that keeps a record of the number of times something happens
	an electromechanical machine designed to assist in summarizing information and, later, accounting.