Layers often name their data differently

Layers 7, 6, 5,
Data is referred to as data.

4 - Transport Layer
Data is referred to as a segment or a datagram.

3 - Network Layer
Data is referred to as a packet.

2 - Data Link Layer
Data is referred to as frame

1 - Physical Layer
Data is now referred to as bits

Now, that data has been broken down to bits
It is now ready for transmission