Terminology is a set of words, sentences, abbreviations or expressions used in a particular subject and reflected in a system [39]. A clear understanding of terminology decreases users' search efforts, facilitates efficient searching, and formulates easier digital library images [45]. The gap between the vocabulary of users and the professional terms and jargons of digital library providers [15] must be addressed, or if necessary accompanied by clear explanations, as it might affect search results [39]. Accordingly, clear terminology will affect the adoption and acceptance of a mobile digital library service.