Morpho-Lexical Alternation in Noun Formation proposes a novel analysis of the structure of complex nouns in English, placing the focus on noun pairs that share single roots but end in different suffixes such as dispersal/dispersion, emergence/emergency, citizenship/citizenry, tipper/tipster, etc. To achieve this mission, the author combines two aspects of language: derivation and usage. With regard to derivation, the book serves to acquaint the readers with the ways in which nouns are formed by means of suffixes. Based on tenets of Cognitive Semantics, the book describes the nominal suffixes as (i) exhibiting multiple senses, (ii) displaying distinct uses, and (iii) reflecting discrete conceptualisations. With reference to usage, the book serves to familiarise readers with the ways in which the noun pairs are actually used. Based on axioms of Usage-based Linguistics, the book depicts the noun pairs as (i) occurring in disparate contexts, and (ii) accompanying distinguishable collocations.