I have never really heard articulation being used in a similar manner to enunciation, although a quick check in a dictionary shows that they are quite similar: articulation (Wiktionary) 3. The quality, clarity or sharpness of speech. org/wiki/articulation enunciation (Wiktionary) 2.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.