Is there a difference between macular degeneration and age-related macular degeneration?

Technically yes: In general when people use the term 'macular degeneration' they are referring to the age-related form, but technically there are other types. Age-related macular degeneration is by far the most common, and the other and more rare forms are often hereditary and present much earlier in life.

Yes and no: Macular degeneration is generally an abbreviated name of the disease age related macular degeneration. However macular degeneration is a more general term that can also refer to any degenerative disease process in the macula like rp , myopic degeneration , presumed histo, macular dystrophies etc..

Not usually: Macular degeneration and age related macular degeneration are use interchangeably. The diseaase use to be called senile macular degeneration. The wording was changed for obvious reasons. The macula can degenerate for other reasons; myopia, trauma, pharacologic. These types of macular damage are degeneration, but for reasons other that armd.