They begin with a capital letter. Walt Disney, Mount Kilimanjaro, Minnesota, Atlantic Ocean, Australia, Empire State Building, Fluffy, Sun Country Concrete Nouns name nouns that you can perceive with your five senses. (Your five senses are the sense of sight, sound, taste, smell, and touch....
The majority of nouns in English simply require you to add an “-s” in order to make them plural. In particular, nouns that end with -th, -ph, -o, -f, -fe, and -on, almost always become plural by adding an “-s,” though this pluralization isn’t limited only to these ending...