You know after I replied...I got to thinking.
Yes... I guess I' ve always thought when someone is talking about a " yearling" ...it is not a fawn. I always think " fawn" when talking about a fawn. However....I thought...I can' t ever really remember myself using the term " yearling" . Never really gave it much thought I guess. I always say...fawn, small doe, med doe, big doe, button buck, rack buck, etc. Laymans terms I guess.

I was curious, so I looked it up on the websters dictionary site, Soooo, for what it' s worth...which probably ain' t much

One entry found for yearling.

Main Entry: year·ling
Pronunciation: ' yir-li[ng], ' y&r-l&n
Function: noun
Date: 15th century
: one that is a year old: as a : an animal one year old or in the second year of its age b : a racehorse between January 1st of the year after the year in which it was foaled and the next January 1st
- yearling adjective