tabulation vs investigation

tabulation and investigation both are nouns.

Word	Noun	Adjective	Verb	Adverb
tabulation	Yes	No	No	No
investigation	Yes	No	No	No

As nouns, investigation is a hypernym of tabulation; that is, investigation is a word with a broader meaning than tabulation:

tabulation: the act of putting into tabular form
investigation: the work of inquiring into something thoroughly and systematically

Other hypernyms of tabulation include investigating.

tabulation (noun)	investigation (noun)
the act of putting into tabular form	the work of inquiring into something thoroughly and systematically
information set out in tabular form	an inquiry into unfamiliar or questionable activities