If something or someone plays a part or plays a role in a situation, they are involved in it and have an effect on it. The american heritage dictionary of the english language gives four definitions of role, the first of which is also r le a character or part. Title the person's title (for example,.
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Though i am a native english speaker, i am having trouble deciding between role and roles in the phrase below. For example, from the google documentation on rich snippets: What is the difference between job title and job role?
The roles of the two.
My opinion is that plays a role as indicates a greater impact on the role and the. They played a part in the.