Talk to oneself, whether silent or aloud.

(idiomatic) It is easy to make boastful or unrealistic statements which are not backed by actions or evidence.

Alternative spelling of talk radio

A radio programme format with discussions about topical issues.

(idiomatic) Alternative form of speak of the devil

Simple, honest speaking.

(US) To talk aggressively or boisterously. / To slander.

(broadcasting) A television or radio programme in which a host converses on various topics with guests who may be experts, celebrities, or members of the listening or viewing audience.

(slang, vulgar, Britain) To talk badly about something. / (slang, vulgar, Britain) To talk nonsense or to lie.

A talk during a conference or similar meeting that is scheduled at a time when everyone can attend, e.g. at a time when nothing else is scheduled.