Stroller is a term that generally refers to a longer jacket.
Three quarter length or mid calf length is a coat that covers 3/4 of the garment worn beneath it.
Seven eighths length or knee length is a coat that conceals 7/8 of the garment worn beneath.
The most versatile style in a fur is a full-length coat because it goes with everything from pants to skirts to formal wear.
Greatcoat is an ultra long, full-length coat, loosely cut sometimes even grazing the ankle. This is the most formal of all styles, perfect for eveningwear.
Adapted from FICA fur.org http://www.fur.org/classic-fur-styles/