sculpture / statue

1a. She creates sculptures out of scrap materials.
1b. She creates statues out of scrap materials.
2a. She creates sculptures out of clay.
2b. She creates statues out of clay.
Please correct all and comment.
Thanks.

No corrections necessary. ‘Statues’ are sculptures in human - or sometimes animal - form. ‘Sculptures’ are 3 dimensional creations and not just statues,