How you use verbal and non-verbal language is very important to how you support clients and their families and friends, and work with your co-workers effectively.
Different situations require different use of language. For example, you would not use a lot of complicated health terminology when talking with a person with a cognitive or intellectual disability about what their support needs are today.
The words you use are very important and knowing what language to use and when is a crucial skill when working in the industry.