Akademik

conversation
n.
1 the informal exchange of ideas by spoken words.
2 an instance of this.
Phrases and idioms:
conversation piece
1 a small genre painting of a group of figures.
2 a thing that serves as a topic of conversation because of its unusualness etc. conversation stopper colloq. an unexpected remark, esp. one that cannot readily be answered.
Etymology: ME f. OF f. L conversatio -onis (as CONVERSE(1))

Useful english dictionary. 2012.