Noun group 1Common nouns and proper nouns
A common noun is a general name for a class of people, places or things: teacher, city, school, language. A proper noun identifies one particular person, place, organisation, language, day or test: Maher, Sydney, Master English, English, Monday, IELTS. Proper nouns begin with capital letters. Compare: The teacher works in a city and Maher works in Sydney.
Noun group 2Concrete nouns and abstract nouns
A concrete noun names something we can experience physically through sight, hearing, touch, smell or taste: book, bell, coffee, classroom. An abstract noun names an idea, quality, emotion, state or process: confidence, freedom, happiness, education. You can see a confident student, but you cannot physically touch their confidence.
Noun group 3Compound nouns
A compound noun is made from two or more words that create one noun meaning. It may be open with a space (test centre, score report), closed as one word (classroom, notebook), or hyphenated (check-in, mother-in-law). The spelling is not always predictable, so check a reliable dictionary when you are unsure.
General or specific name?If the word gives a general name, it is common. If it is the official or individual name, it is proper.
Physical or non-physical?If it can be experienced physically, it is concrete. If it names an idea, feeling, quality, state or process, it is abstract.
One meaning from several words?If two or more words work together as a single noun, it is compound—even when spaces or hyphens remain.