Be very careful when using the following uncountable nouns, because they have no plural!
Ideas and experiences: advice, information, progress, news, luck, fun, work
Materials & substances: water, rice, cement, gold, milk
Weather words: weather, thunder, lightning, rain, snow
Groups or collections of things: furniture, equipment, rubbish, luggage
Other: accommodation, baggage, homework, knowledge, money, permission, research, traffic, travel.
Only in plural: shorts, pants, pyjamas, glasses (for the eyes), binoculars, scissors, trousers.
Source: Cambridge Dictionaries