When Brad was first flagged with DCD, I was confused by the terminology and seemingly conflicting information. Dyspraxia, which is not an official diagnosis, is a broader term, and includes within its scope symptoms such as language delay and social impairment. DCD, by contrast, is defined as a pure motor coordination impairment.
Since then, I've discovered that, although DCD is defined as a pure motor coordination impairment, studies have shown a strong correlation between DCD and language impairment. See, e.g. Comparing Language Profiles: Children with Specific Language Impairment and Developmental Coordination Disorder; Early Identification: Are toddlers with Speech/Language Impairments at Increased Risk for Developmental Coordination Disorder?