In linguistics, a suffix is an affix which is placed after the stem of a word. Common examples are case endings, which indicate the grammatical case of nouns and adjectives, and verb endings, which form the conjugation of verbs. Suffixes can carry grammatical information (inflectional endings) or lexical information (derivational/lexical suffixes). Inflection changes the grammatical properties of a word within its . Derivational suffixes fall into two categories: class-changing derivation and class-maintaining derivation. Particularly in the study of Semitic languages, suffixes are called affirmatives, as they can alter the form of the words. In Indo-European studies, a distinction is made between suffixes and endings (see Proto-Indo-European root). A word-final segment that is somewhere between a free morpheme and a bound morpheme is known as a suffixoid or a semi-suffix (e.g., English -like or German -freundlich "friendly"). Girls—where the suffix -s marks the plurality. He makes—where suffix -s marks the third person singular present tense. It closed—where the suffix -ed marks the past tense. It's Brighter—where the suffix -er marks the Comparative. De beaux jours—where the suffix -x marks the plural. Elle est passablement jolie—where the suffix -e marks the feminine form of the adjective. mein Computer—where the lack of suffixes is because its case, nominative, is "unmarked" meines Computers—genitive case meinem Computer—dative case meinen Computer—accusative case мой компьютер—where the lack of suffixes is because its case, nominative, is "unmarked" моего компьютера—genitive case моему компьютеру—dative case мой компьютер—accusative case за-туш-и-ть свечу—where first word has -и- suffix, -ть ending (infinitive form); second word with ending -у (accusative case, singular, feminine). добр-о-жел-а-тель-н-ый—добр- root, -о- interfix, -жел- root, verbal -a- interfix, nominal -тель suffix, adjectival -н- suffix, adjectival -ый ending (nominative case, singular, masculine).