checks if a work is irregular

(irregular? “geese”) => true

converts a word into its plural

(plural “man”) => “men”

(plural “rate”) => “rates”

(plural “inventory”) => “inventories”

(plural “moose”) => “moose”

goes through rules and checks if there is a matching pattern

(resolve-rules @singular-rules “hello”) => nil

(resolve-rules @singular-rules “hellos”) => “hello”

converts a word into its singular

(singular “rats”) => “rat”

(singular “geese”) => “goose”

checks if a word is uncountable

(uncountable? “gold”) => true

(uncountable? “moose”) => true