Hello!

Back cross is the cross of the hybrid with one of its parents or any individual which is genetically similar to one the parents. It is done to achieve the hybrid genetically close to the parent of the hybrid.

No, there is no front cross type anything in genetics.

Hello!!

Backcrossing is a crossing of a hybrid with one of its parents or an individual genetically similar to its parent, in order to achieve offspring with a genetic identity which is closer to that of the parent. It is used in horticulture, animal breeding and in production of gene knockout organisms

And for the second part of your question it's only back cross.

Thanks