Is there a difference between strabismus and amblyopia?

They are differnt: Strabismus is when the eyes are not properly aligned so that one eye is deviated. Amblyopia is decreased vision in one or both eyes because the image or object you are viewing is not properly focused. Amblyopia develops when you are younger usually between birth and 8-9 years when the visual system is still developing.

Strabismus: Strabismus affects the eye muscle alignment of both eyes and in an individual that has a constant strabismus (including a micro-strabismus) in which one eye is constantly deviated, usually inward, an amblyopia can develop.