D. Some nouns have both Countable and Uncountable meaning: business, danger, death, hope, industry, language, marriage, paper, power, property, tax, time, travel, use, work, etc. (e.g. We should always have hope. vs. Jon had hopes of promotion.)
D1. Group nouns: army, audience, committee, company, crew, enemy, family, flock, gang, government, group, herd, media, public, regiment, staff, team, etc.
a. we can use them either as singular nouns or as plural nouns. (e.g. My family is very dear to me. I have a large family. They are very dear to me. (= The members of my family ~))
b. but company, organisation and teams are usually plural in spoken English. (e.g. The ABC Oil Company are putting prices down by 12%.)
D2. Proper nouns are spelled with a capital letter:
a. Names of people, places and organisations: Cambridge University, Double Click, etc.
b. Festivals: Christmas, etc.
c. Title: Doctor Jon, etc.
d. Names of books and films: The Old Man and the Sea, etc.
e. Plays and painting: The Lion King, etc.
Today's Idiom:
pick up your ears: to listen very carefully
Example: The children pricked up their ears when they heard the word biscuit.