【Commit】 , 【entrust】 , 【confide】 , 【consign】 , 【relegate】 are comparable when they mean to assign to a person or place for some definite end or purpose (as custody or safekeeping).
【Commit】 is the widest term; it may express merely the general idea of delivering into another’s charge or it may have the special sense of a transfer to a superior power or to a place of custody.
To 【entrust】 is to 【commit】 with trust and confidence; to 【confide】 is to 【entrust】 with entire reliance and assurance.
【Consign】 implies a more formal act and frequently suggests such transfer or delivery as removes its object from one’s immediate control.
To 【relegate】 is to 【consign】 to some particular class, position, or sphere usually with the implication of setting aside or getting rid of.