Cases of word usage

1) (of a person) easy to discuss a problem with, ask for help etc (approachable)

2) the state of discussing for being discussed; talk in order to discuss (discussion)

3) to discuss in order to come to an agreement; to arrange (something) by discussion (negotiate)

4) to thing, discuss something, like a philosopher (philosophize)

5) a meeting of church officers to discuss church matters (synod)