y'all / yawl are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
y'all: NA
yawl: (noun) a ship's small boat (usually rowed by 4 or 6 oars). (noun) a sailing vessel with two masts; a small mizzen is aft of the rudderpost.
y'all: y·AO·l
yawl: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)