I'm not sure what the question is. Different suffixes (end-bits) form different words that usually have different meanings. When the words are participles (ending "-ing" and "-ed"), they expand on the meaning of the verb; "rested" and "resting" have meanings closely related to the meaning of the verb. But with other suffixes, the meanings needn't be so closely related; "restive", "restless" and "restful" all exist; use a dictionary to compare their distinct meanings.
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