aponeurosis vs. tendon

noun

Anatomy.

plural

aponeuroses 
  1. a whitish, fibrous membrane that connects a muscle to a bone or fascia.

noun

  1. Anatomy.,  a cord or band of dense, tough, inelastic, white, fibrous tissue, serving to connect a muscle with a bone or part; sinew.

  2. a reinforcing strand in prestressed concrete.