Difference between bereave and inconsolable

[HoThuTrang]

Hi all,
I have 2 questions that I didn't find out their answers. And I need your help
Question1
What is the difference between bereave and inconsolable .Is it mean that s.o/s.body feels alone, hurt when they lost sth/s.o?
Question 2
The following sentence is wrong or right?
The boy is just learning to walk so he is always tumbling over the floor.
Because I knew that tumble means fall to the ground and if I can use the verb tumble in present continuous tense like that?

[Kitosdad]

The boy is just learning to walk so he is always stumbling.

bereave and inconsolable

A mother is inconsolable at the loss of a child, and is bereft.
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[HoThuTrang]

Thanks for your reply.But I think that you misunderstood my question 2. The verb tumble means fall to the ground and it is used in continuous tense in that sentence so I wonder it is right or wrong. I don't think "stumbling" is correct