Motor Speech Disorders (aka developmental verbal apraxia) applies to a child who has a good understanding of language but struggles with coordinating oral movement needed to imitate and/or produce simple sounds and/or words.

Not all children present with the same characteristics. General things to look for include:

Developmental Motor Speech Disorders

✔ Does not coo or babble as an infant
✔ Limited sound repertoire
✔ Inconsistent errors
✔ Struggling to find the right sound or to coordinate
    the lips, tongue, and jaw for purposeful movement
✔ Limited growth in vocabulary
✔ First words are late and maybe missing sounds
✔ Difficulty imitating speech
✔ Can understand language better than speak it
✔ May have problems eating
✔ Is hard to understand, especially
    for an unfamiliar listener