The noun form for the adjective pleasant is pleasantness; another noun form is pleasantries.
Yes, here are the books he has made (I advise to read them in order):Skullduggery PleasentSkullduggery Pleasent Playing with fireSkullduggery Pleasent The faceless onesSkullduggery Pleasent Dark DaysSkullduggery Pleasent Mortal coilSkullduggery Pleasent Death BringerSkullduggery Pleasent The End Of The WorldThe first Skullduggery Pleasent at the start can be a bit boring but when you start getting to it and when there is more magic and creatures involved, they are the best.
Two types of nouns are common and proper nouns.
The two nouns in your sentence are words and nouns, they are plural, common nouns.
Two kinds of nouns are common or proper, singular or plural.
Abstract nouns:educationtroubleConcrete nouns: elevatortree
The two nouns, 'nouns' and 'sentence' are placed correctly in your sentence.
The two numbers of nouns are singular and plural.
There are two nouns in the sentence: flower and fragrance.
Enjoyable
proper nouns = Helen, Romecommon nouns = table, computer
The two nouns that form sunshine are the words 'sun' and 'shine'.
Two nouns (synonyms) for the noun slavery are bondage and enslavement.