are two grammatical numbers, singular and plural. Nouns from nouns and adjectives The suffix -ci attached to a noun denotes a person involved with what is named by the noun: {| class=wikitable ! Noun !! Noun + -ci |- | iş "work" || işçi "worker" |- | balık "fish" || balıkçı "fisherman" |- | gazete "newspaper" || gazeteci "newsagent", "journalist" |- |} The suffix -lik attached to a noun or adjective denotes an abstraction, or an object involved with what is named by the noun: {| class=wikitable ! Noun !! Noun + -lik |- | iyi "good" || iyilik "goodness" |- | tuz "salt" || tuzluk "salt shaker" |- | gün "day" || günlük "diary", "daily" (adverb) |- | gece "night" || gecelik "nightgown" |- |} Nouns from verbs The noun in -im denoting an instance of action was mentioned in the introduction to Turkish grammar. yat- "lie down", yatır- "lay down", yatırım "investment". For more examples on word derivations, see the related article: List of replaced loanwords in Turkish. Adjectives Classification of adjectives Adjectives can be distinguished as being descriptive (niteleme "qualifying"), or determinative (belirtme): in particular: demonstrative (gösterme "to show" or işaret "sign"), numerical (sayı "number"), indefinite (belirsizlik or belgisiz), interrogative (soru "question"). For an intensive form, the first consonant and vowel of a (descriptive) adjective can be reduplicated; a new consonant is added too, m, p, r, or s, but there is no simple rule for which one: {| class=wikitable ! Adjective !! Intensive Form |- | başka "other" || bambaşka "completely different" |- | katı "hard" || kaskatı "hard as a rock" |- | kuru "dry" || kupkuru "dry as a bone" |- | temiz "clean" || tertemiz "clean as a whistle" |} The determinative adjectives, or determiners, are an essential part of the language, although Turkish takes some of its determiners from Arabic and Persian. Demonstrative adjectives o "that", bu "this", şu "this" or "that" (thing pointed to). These are also demonstrative pronouns. Used with plural nouns, these adjectives represent the English "those" and "these"; there is no such inflexion of adjectives in Turkish. Numerical adjectives The cardinal numbers are built up in a regular way from the following: {| class="wikitable" |- align="center" ! rowspan=2 | 0-9 ! 0 ! 1 ! 2 ! 3 ! 4 ! 5 ! 6 ! 7 ! 8 ! 9 |- align="center" | sıfır | bir | iki