missionary vs missional

missionary is a noun but missional is not a noun.

Word	Noun	Adjective	Verb	Adverb
missionary	Yes	Yes	No	No
missional	No	Yes	No	No

As adjectives, missionary and missional are synonyms defined as:

missionary and missional: relating to or connected to a religious mission

missionary (noun)	missional (noun)
someone who attempts to convert others to a particular doctrine or program
someone sent on a mission--especially a religious or charitable mission to a foreign country

missionary (adjective)	missional (adjective)
relating to or connected to a religious mission	relating to or connected to a religious mission