difference between caplet and call

I wanted to know the difference between a caplet and a call. In my course (Interest rate models and curves) , we said that a caplet is a call option. Is it really true? Thanks

A caplet is a call, as the payoff is given by $(L-K)^+$, where $L$ is the libor rate for a given calculation period and $K$ is the pre-agreed rate. However, in practice, the volatilities for a strip of caps are usually provided, and then a bootstrapping algorithm is needed to back out the volatility for each caplet.