Logic api push

I started to write a client to push data on tipboard, so after looking the different data to send to the tile, I see the same field with a different name on different tile, and I want to know if is just a lack of comprehension or a problem of logic ?

| tile | title | description |
| ------------- | ------------- | --------- |
| pie_chart | title | N/A |
| line_chart | subtitle | description |
| cumulative_flow | title | N/A |
| simple_percentage | title | subtitle |
| bar_chart | title| subtitle |
| big_value | title | description |
| just_value | title | description |
| advanced_plot | title | description |
| norm_chart | title | description |

I suppose they too late to change that now ? (for backwards compatibility)