Commonly confused words

  tool (a thing that you use with your hands to do a particular job) Hummer is the only tool I need. I don’t have the right tools to fix this. (a thing that you use in order to perform a job or to achieve an aim) The internet can be used as …

  in the end (eventually, finally) If you work hard, you will succeed in the end. In the end, the army surrendered. This river, in the end, flows to the sea.   at the end (final part) We were drunk at the end of the party. I pay the bills at the end of each …

  in case (because of a possibility of) I’ll take my umbrella in case it rains. Take warm clothes in case the weather is cold.   if (on the condition that) If the weather is nice, we can go for a walk. I wouldn’t tell anyone, even if I were aware.   …

  flue (a pipe or channel that takes smoke, gas, etc. out of a building) We need to install a metal flue for the furnace. The smoke won’t go out because the flue is blocked up.   flu [formal: influenza] (an illness like a very bad cold that causes fever, pain, …

  stair (one of the steps in a set of stairs) He was sitting on the top stair. We need to go up four flights of stairs.   stare (to look at someone or something in a steady way) It’s rude to stare at a girl. What is he staring at? envocabulary.com