picturing vs imagination

picturing and imagination both are nouns.

Word	Noun	Adjective	Verb	Adverb
picturing	Yes	No	No	No
imagination	Yes	No	No	No

As nouns, imagination is a hypernym of picturing; that is, imagination is a word with a broader meaning than picturing:

Other hypernyms of picturing include imagery, imaging, mental imagery.

picturing (noun)	imagination (noun)
visual representation as by photography or painting	the formation of a mental image of something that is not perceived as real and is not present to the senses
visual imagery	the ability to form mental images of things or events
	the ability to deal resourcefully with unusual problems