sensation vs sense impression

sensation and sense impression both are nouns.

Word	Noun	Adjective	Verb	Adverb
sensation	Yes	No	No	No
sense impression	Yes	No	No	No

As nouns, sensation and sense impression are synonyms defined as:

sensation and sense impression: an unelaborated elementary awareness of stimulation

Other synonyms of sensation include aesthesis, esthesis, sense datum, sense experience.

sensation (noun)	sense impression (noun)
an unelaborated elementary awareness of stimulation	an unelaborated elementary awareness of stimulation
the faculty through which the external world is apprehended
a general feeling of excitement and heightened interest
someone who is dazzlingly skilled in any field
a state of widespread public excitement and interest