Although and though are both correct words, and they often mean the same thing. Both can introduce a contrast between two ideas, as in…

Because vs since can be confusing because both words can introduce a reason. You can say, “I stayed home because I was sick” or “I stayed home…

Such as and like are both correct, but they do not always mean the same thing. The best choice depends on whether you are naming real examples…

Like vs as can be confusing because both words can compare things. You may hear “She sings like a pro” and “Sing as I showed you,” and both…

May vs might can be tricky because both words often talk about possibility. You can say, “It may rain later” or “It might rain later,” and…

Could and would are both common modal verbs, so they often appear in similar sentence patterns. That is why they can confuse even strong…

Should and would are both correct words, but they do different jobs. The right choice depends on what you mean. Use should when you mean…

Must vs have to can be confusing because both phrases show that something is necessary. In many sentences, they seem close in meaning. For…

Shall vs will can confuse writers because both words can point to the future. You may see “I shall call you tomorrow” and “I will call you…

Can vs may is confusing because both words can ask or give permission. Many people learned the old classroom correction: “Can I go?” asks…