Avoid abbreviations for strings and enums

index.bs

@@ -2205,7 +2205,7 @@ is a request, rather than a guarantee.
 Use strings as the values for constants or sets of enumerated values.
 
 Strings make it easier for developers to inspect values
-and read code that uses those values.
+and read code that uses those values (see [[#naming-is-hard]]).
 In JavaScript engines there is no performance benefit
 to using integers instead of strings.
 The values of a [WebIDL enum type](https://webidl.spec.whatwg.org/#idl-enums)
@@ -3798,6 +3798,9 @@ API naming *must* be done in easily readable US English.
 Keep in mind that most web developers aren't native English speakers.
 Whenever possible, names should be chosen that use common vocabulary
 a majority of English speakers are likely to understand when first encountering the name.
+Abbreviations should be avoided,
+except in cases where an abbreviation is extremely common and easier to understand.
+For example `UIEvent`, where "`UI`" stands for user interface. 
 
 <div class="example">