What's the difference between then and thenadays?

Then

Definition:

• (adv.) At that time (referring to a time specified, either past or future).
• (adv.) Soon afterward, or immediately; next; afterward.
• (adv.) At another time; later; again.
• (conj.) Than.
• (conj.) In that case; in consequence; as a consequence; therefore; for this reason.

Example Sentences:

Thenadays

Definition:

• (adv.) At that time; then; in those days; -- correlative to nowadays.

Example Sentences: