dissection vs analysis

dissection and analysis both are nouns.

Word	Noun	Adjective	Verb	Adverb
dissection	Yes	No	No	No
analysis	Yes	No	No	No

As nouns, analysis is a hypernym of dissection; that is, analysis is a word with a broader meaning than dissection:

dissection: detailed critical analysis or examination one part at a time (as of a literary work)
analysis: an investigation of the component parts of a whole and their relations in making up the whole

As nouns, analysis is a hypernym of dissection; that is, analysis is a word with a broader meaning than dissection:

dissection: a minute and critical analysis
analysis: the abstract separation of a whole into its constituent parts in order to study the parts and their relations

Other hypernyms of dissection include analytic thinking.

dissection (noun)	analysis (noun)
cutting so as to separate into pieces	an investigation of the component parts of a whole and their relations in making up the whole
detailed critical analysis or examination one part at a time (as of a literary work)	a set of techniques for exploring underlying motives and a method of treating various mental disorders; based on the theories of Sigmund Freud
a minute and critical analysis	the abstract separation of a whole into its constituent parts in order to study the parts and their relations
	a branch of mathematics involving calculus and the theory of limits; sequences and series and integration and differentiation
	a form of literary criticism in which the structure of a piece of writing is analyzed
	the use of closed-class words instead of inflections: e.g., `the father of the bride' instead of `the bride's father'