putting iron vs putter

putting iron and putter both are nouns.

Word	Noun	Adjective	Verb	Adverb
putting iron	Yes	No	No	No
putter	Yes	No	Yes	No

As nouns, putting iron and putter are synonyms defined as:

putting iron (noun)	putter (noun)
the iron normally used on the putting green	the iron normally used on the putting green
	a golfer who is putting

putting iron (verb)	putter (verb)
	move around aimlessly
	do random, unplanned work or activities or spend time idly
	work lightly