stratify vs differentiate

stratify and differentiate both are verbs.

Word	Noun	Adjective	Verb	Adverb
stratify	No	No	Yes	No
differentiate	No	No	Yes	No

As verbs, differentiate is a hypernym of stratify; that is, differentiate is a word with a broader meaning than stratify:

Other hypernyms of stratify include distinguish, secern, secernate, separate, severalise, severalize, tell, tell apart.

stratify (verb)	differentiate (verb)
render fertile and preserve by placing between layers of earth or sand	become distinct and acquire a different character
form layers or strata	become different during development
form, arrange, or deposit in layers	evolve so as to lead to a new species or develop in a way most suited to the environment
divide society into social classes or castes	calculate a derivative; take the derivative
develop different social levels, classes, or castes	mark as different
	be a distinctive feature, attribute, or trait; sometimes in a very positive sense