image vs visualise

image is a noun but visualise is not a noun.

Word	Noun	Adjective	Verb	Adverb
image	Yes	No	Yes	No
visualise	No	No	Yes	No

As verbs, image and visualise are synonyms defined as:

Other synonyms of image include envision, fancy, figure, picture, project, see, visualize.

As verbs, visualise is a hypernym of image; that is, visualise is a word with a broader meaning than image:

Other hypernyms of image include visualize.

image (noun)	visualise (noun)
a visual representation (of an object or scene or person or abstraction) produced on a surface
a representation of a person (especially in the form of sculpture)
(Jungian psychology) a personal facade that one presents to the world
the general impression that something (a person or organization or product) presents to the public
an iconic mental representation
a standard or typical example
language used in a figurative or nonliteral sense
(mathematics) the set of values of the dependent variable for which a function is defined
someone who closely resembles a famous person (especially an actor)

image (verb)	visualise (verb)
imagine; conceive of; see in one's mind	make visible
render visible, as by means of MRI	imagine; conceive of; see in one's mind
	form a mental picture of something that is invisible or abstract
	view the outline of by means of an X-ray