Non-standard speech and Voice communication

Non-standard speech noun - Speech that differs from the usual accepted, easily recognizable speech of native adult members of a speech community.

Voice communication and non-standard speech are semantically related. In some cases you can use "Voice communication" instead a noun phrase "Non-standard speech".

Voice communication noun - (language) communication by word of mouth.

Non-standard speech and voice communication are semantically related. Sometimes you can replace phrase "Non-standard speech" with "Voice communication", this phrases are similar.