planner vs strategist

planner and strategist both are nouns.

Word	Noun	Adjective	Verb	Adverb
planner	Yes	No	No	No
strategist	Yes	No	No	No

As nouns, strategist is a hyponym of planner; that is, strategist is a word with a more specific, narrower meaning than planner:

Other hyponyms of planner include designer, intriguer, maneuverer, manoeuvrer, plotter, schemer, strategian, tactician.

planner (noun)	strategist (noun)
a notebook for recording appointments and things to be done, etc.	an expert in strategy (especially in warfare)
a person who makes plans