2. Countless nouns in the material category mainly include milk, salt, rain, pork, tea, cake, grass, fog, beer, juice, newspaper, rice, tea, meat, sugar, coffee, soup, snow, etc.

3. Abstract uncountable nouns mainly include advice, experience, progress, work, kindness, beauty, help, justice, fun, help, knowledge, truth, wisdom, honesty and strength.

4. There are countless nouns representing attributes and disciplines, mainly including landscape architecture, literature, geology, furniture, music, equipment, grammar, science, jewelry, vocabulary, business, mathematics, economics, weather, history and so on.