A terminal is disclosed including a receiver that receives information comprising a first indicator regarding a search space set categorization and a second indicator regarding a search space set index, the first indicator and the second indicator corresponding to each of one or more search space sets; and a processor that controls a monitoring of downlink control channel candidates allocated to each of the search space sets based on the search space set categorization and the search space set index. In other aspects, a radio communication method and a base station are also disclosed.