missionary vs teacher

missionary and teacher both are nouns.

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

As nouns, teacher is a hypernym of missionary; that is, teacher is a word with a broader meaning than missionary:

missionary: someone who attempts to convert others to a particular doctrine or program
teacher: a person whose occupation is teaching

Other hypernyms of missionary include instructor.

missionary (noun)	teacher (noun)
someone who attempts to convert others to a particular doctrine or program	a personified abstraction that teaches
someone sent on a mission--especially a religious or charitable mission to a foreign country	a person whose occupation is teaching

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