What's the difference between quinary and senary?

Quinary

Definition:

• (a.) Consisting of five; arranged by fives.

Example Sentences:

• (1) Besides these three forms, there are two others, quaternary hyperparathyroidism and quinary hyperparathyroidism, which are described.
• (2) The epsilon values for the quaternary and quinary complexes are 6.4 and 3.1, respectively.

Senary

Definition:

• (a.) Of six; belonging to six; containing six.

Example Sentences:

• (1) (In view of recent evidence of the specific requirement of two cations, the complex is accurately described as senary).