This book provides new research on linguistics. Chapter One shows the shortcomings and drawbacks of classical single-factor or unilateral theories of word learning, lexical acquisition, and language development. Chapter Two reviews the Verbal Grammar Correlation Index (VGCI) as a tool of comparative linguistics. Chapter Three discusses academic literacy adaptation in the international graduate students' use of lexical bundles through corpus research. Chapter Four investigates the role of the implementation of the multisemiotic theory through the analysis of the Orthodox Patriarchs’ photographs.