Sequence       
First / firstly, second / secondly, third / thirdly etc
Next, last, finally
In addition, moreover
Further / furthermore
Another
Also
In conclusion
To summarize
 
Result
So
As a result
As a consequence (of)
Therefore
Thus
Consequently
Hence
Due to
 
 
Emphasis
Undoubtedly
Indeed
Obviously
Generally
Admittedly
In fact
Particularly / in particular
Especially
Clearly
Importantly
 
Addition    
And
In addition / additionally / an additional
Furthermore
Also
Too
As well as
 
 
 
Reason
For
Because
Since
As
Because of
 
Example
For example
For instance
That is (ie)
Such as
Including
Namely
 
Contrast
However
Nevertheless
Nonetheless
Still
Although / even though
Though
But
Yet
Despite / in spite of
In contrast (to) / in comparison
While
Whereas
On the other hand
On the contrary
 
Comparison
Similarly
Likewise
Also
Like
Just as
Just like
Similar to
Same as
Compare
Compare (d) to / with
Not only...but also