What is the difference between fiber and fabric?

Your friend is right.

Fabric is made from fibres.

• A fibre is a long strong thread, which is obtained from natural sources or man- made sources.
• Fabric is a cloth typically produced by weaving or knitting fibres.

More to know:

Fibres are classified into two types

1. Natural fibres (Plant fibres and Animal fibres) 2.  Synthetic fibres.

• Plant fibres are obtained from plants. e.g., jute.
• Animal fibres are obtained from animals, e.g., silk and wool.
• Fibres which are made by the human are Man-made or Synthetic Fibres, e.g., Rayon.

@ Abhishek: Good answer. Keep posting!