What are the responses to 2 clubs in bridge?

In bridge, the responses to a bid of 2 clubs can vary depending on the bidding system being used. Generally, a bid of 2 diamonds is a waiting bid, asking the opener to further describe their hand. Other possible responses include bidding a suit at the 2-level to show a 5-card suit, or making a bid at the 3-level to show a strong hand with support for clubs.