ballistocardiogram vs graph

ballistocardiogram and graph both are nouns.

Word	Noun	Adjective	Verb	Adverb
ballistocardiogram	Yes	No	No	No
graph	Yes	No	Yes	No

As nouns, graph is a hypernym of ballistocardiogram; that is, graph is a word with a broader meaning than ballistocardiogram:

ballistocardiogram: a graphical recording made by a ballistocardiograph
graph: a visual representation of the relations between certain quantities, represented as points, plotted with reference to a set of axes

Other hypernyms of ballistocardiogram include graphical record, graphical recording.

ballistocardiogram (noun)	graph (noun)
a graphical recording made by a ballistocardiograph	a visual representation of the relations between certain quantities, represented as points, plotted with reference to a set of axes
	a visual display of information
	a written symbol that is used to represent speech

ballistocardiogram (verb)	graph (verb)
	represent by means of a graph
	plot upon a graph