As nouns the difference between roomate and rowmate
is that roomate is while rowmate is someone who is in the the same row.
rowmate
English
Noun
(
en noun)
Someone who is in the the same row.
* 2010 ,Whitney Taylor Shaw, A Taste for Belize: A Tropical Travelogue - Page 9
- I'm sure I drove my rowmate, Kristen, crazy.