Not exactly. When milfs and cougars are meant, it means that one of the partners (basically, a male one) is to be much younger. When we speak about the hookup and dating for seniors, it means that in these couples both partners can be of age (regardless of their gender and sexual orientation). Also, the seniors dating and hookup presupposes that one of the partners can be much younger, but it’s not a must. Finally, the presence/absence of children as well as their number are not significant.