Coilover or strut is a short term for "coil spring over strut" or "coil-over-oil"
Simply put a strut is just different version of a shock. So, yes the front end uses a shock but, in a different way.
"Struts are simply shock absorbers used as major structural members. For struts, the shock absorber is placed inside the coil spring." -
edmunds.com
In order to not further debate (which is a good one that has been long discussed). I'll stop by saying we are both correct. Just using the terms differently.
jpmac - to your alignment question. It's recommended to have it checked after you replace your shock/strut. Some places won't even charge you if the front end is still within spec.