We use linking words to join ideas together when we're talking or writing. Sometimes we want to link two ideas that are different from each other (for example, one is a positive idea and one is a negative idea) or we want to link one idea to another one which is surprising or unexpected. We can use linking words like 'however', 'although' and 'despite' to do this.
While and whereas
While is a conjunction that is most commonly used with time, but it can also be used to mean 'despite the fact that' or 'although'.
In this sense, while comes at the beginning of the sentence.
While and whereas can be used to mean 'but' or 'compared with the fact that', to compare two contradictory ideas.
In this sense, while/whereas can come at the beginning of the sentence or between the two contradictory clauses.
Yet
Use the linker yet when expressing an idea that is surprising because it contradicts what has been mentioned earlier. For example:
Although
After although we use a subject and a verb. We can use 'although' at the beginning or in the middle of a sentence. It is used in front of a clause (a clause has at least a subject and a verb that agrees with the subject).
Even though
Even though is a slightly stronger form of although.
Like although, even though is followed by a subject and a verb.
Despite / in spite of
We use 'despite' or 'in spite of' before a noun or a gerund. It can also go in the middle or at the beginning of a sentence. 'Despite' and 'in spite of' mean exactly the same thing. (The only difference between in spite of and despite is the ‘of’.) You can choose whichever one you like! If you want to use 'despite' or 'in spite of' before a clause (subject and verb), we must include the expression ‘the fact that’.
However
We use 'although' and 'despite / in spite of' to connect two clauses in the same sentence. On the other hand, 'however' isn't used to connect two clauses. Instead, we usually put the two ideas in two separate sentences. We put 'however' in the second sentence. We can put it at the beginning, at the end, or after the subject.
But
But is more informal than, however. You can’t use but at the beginning of a sentence (in written English).
Even if
Even if means 'whether or not' or 'no matter whether'. It's followed by a subject and a verb.
Though
We can use “though” either at the beginning or at the end of a sentence. But keep in mind that if you say it at the beginning of the sentence, you’ll sound really formal. Take a look:
Nowadays, we’ll see “though” being used at the end of a sentence. It often replaces the word “but”. Besides, you’ll sound more informal and really cool! ;)
Much as
Much as is a more formal expression. It means 'although', 'despite how much' or 'no matter how much'.