usage
in the last two examples of sense 2 whom is correct, but who is common in less formal contexts.
n. The act of using; mode of using or treating; treatment; conduct with respect to a person or a thing; as, good usage; ill usage; hard usage.
in the last two examples of sense 2 whom is correct, but who is common in less formal contexts.
n. The act of using; mode of using or treating; treatment; conduct with respect to a person or a thing; as, good usage; ill usage; hard usage.