Overall can be supplanted by In general 

Phrases/ Vocabulary

It is clear that

It is clearly evident that

We can see from the chart 

According to the bar graph

Detail: 

Most of the detail

More specific 


Learn Superlative and comparative

The highest

The lowest

The greatest

The least/most

.....is greater than....

....had a smaller increase than......


Compare /contrast 

In contrast (  If one thing is in contrast to another, it is very different from it)

On the contrary ( It was not a good thing, on the contrary it was a huge mistake)

....differs from......

Both

are like

are similar

Similarly