A ‣ Tools, instruments, pieces of equipment 
B ‣ Things we wear 
C ‣ Other useful words 
The graphics in this game are amazing! [pictures produced on a computer]
When will the goods be delivered? [articles/items]
The architect inspected the foundations [ under the building] before declaring that the premises were safe. [ the building itself]
The military authorities have established their headquarters in the old Town Hall.
The acoustics in the new opera house are near perfect. [ quality of the sound]
The contents /ˈkɒntents/ of the house were sold after her death.
Looks are less important than personality in a partner.
As you come to the outskirts of the village, there are traffic lights. Turn left there. [the beginning or end of the village]
The stairs are a bit dangerous -be careful.
The proceeds of the concert are going to the children's fund. [money from selling tickets]
A terrorist has escaped from prison. Her whereabouts are unknown. [where she is]
D ‣ Words with plural form but used mostly with singular verbs
Names of some games: billiards dominoes draughts darts bowls cards
Names of subjects/activities: physics economics classics gymnastics athletics
Common mistakes
Some words look plural, or may be thought of as plural, but are not, e.g. news, spaghetti (an Italian plural form), series, means.
The news is good. (NOT The news are good.)
The spaghetti was delicious. (NOT The spaghetti were delicious.)
There was a series of programmes on TV about Japan.
Is there a cheap means of transport I could use to get there?