planner vs tactician

planner and tactician both are nouns.

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

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

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

planner (noun)	tactician (noun)
a notebook for recording appointments and things to be done, etc.	a person who is skilled at planning tactics
a person who makes plans