Though it’s harder for women to ejaculate than it is for men, women do have the advantage of it being easier for them to experience multiple orgasms.
Remember, each orgasm consists of multiple contractions and that each contraction on its own is not an orgasm. Each successive orgasm requires a build up just as the first one did, though you may be able to reach orgasm faster the second, third, or fourth time.
Sequential orgasms are ones that are more spaced out and several minutes apart, while serial orgasms happen within just seconds of the last one ending. It can be easy to confuse one powerful orgasm with a serial orgasm, though there’s no real harm in doing so.