The word "REDEEM" (psa 107:2)

Psa 107:2 Let the redeemed of the LORD say so, whom he hath redeemed from the hand of the enemy;
Psa 107:3 And gathered them out of the lands, from the east, and from the west, from the north, and from the south.


Redemption is such a misunderstood word.

Are all the following words synonyms, or are there differences between them?

1. Redeem

2. Saved -

             Psa 106:10 "And he saved them from the hand of him that hated them, and redeemed them from the hand of the enemy."

3. Delivered

          - Psa 69:18 " Draw nigh unto my soul, and redeem it: deliver me because of mine enemies."

4. Gathered and brought back
           - Exo 6:6 Wherefore say unto the children of Israel, I am the LORD, and I will bring you out from under the burdens of the Egyptians,

                          and I will rid you out of their bondage, and I will redeem you with a stretched out arm, and with great judgments:
5. Ransomed
            - Hos 13:14 " I will ransom them from the power of the grave; I will redeem them from death"
6. Bought/Purchased
            - Psa 74:2 Remember thy congregation, which thou hast purchased of old; the rod of thine inheritance, which thou hast redeemed;

Did I miss any other words?