useful as in being of use or service

• "the girl felt motherly and useful"
• "a useful job"
• "a useful member of society"

Synonyms

• utilebeing of use or service

useful as in having a useful function

• "utilitarian steel tables"

Synonyms

• utilitariansomeone who believes that the value of a thing depends on its utility ; having a useful function; having utility often to the exclusion of values