ASEAN Vocabulary is a dictionary app that helps users learn the vocabulary from ASEAN languages, including the most spoken languages in the region such as Khmer, Lao, and Thai. 

The application is an offline dictionary that can be used without the need for an internet connection. It includes the latest words and meanings from the most up-to-date sources. There are various ways to search for words such as by alphabet, pronunciation, or translation. 

There are different types of search results such as thesaurus, alphabet, and pronunciation. The user can choose the type of search and can also choose the language.