New Birth vs Regeneration

Titus 3:5 Not by works of righteousness which we have done, but according to his mercy he saved us, by the washing of regeneration, and renewing of the Holy Ghost;

• AMP - He saved us, not because of any works of righteousness that we have done, but because of His own compassion and mercy, by the cleansing of the new birth (spiritual transformation, regeneration) and renewing by the Holy Spirit,

Washing

G3067 - λουτρόν loutrón, loo-tron'; from G3068; a bath, i.e. (figuratively), baptism:—washing.

G3068 - λούω loúō, loo'-o; a primary verb; to bathe (the whole person; whereas G3538 means to wet a part only, and G4150 to wash, cleanse garments exclusively):—wash.

G3538 - νίπτω níptō, nip'-to; to cleanse (especially the hands or the feet or the face); ceremonially, to perform ablution:—wash. Compare G3068.

G4150 - πλύνω plýnō, ploo'-no; a prolonged form of an obsolete πλύω plýō (to "flow"); to "plunge", i.e. launder clothing:—wash. Compare G3068, G3538.

First impression

I notice the following:

1. Differentiation between garments/clothing and people
2. When referring to "people", there are various possibilities:
   1. figuratively, and in this case it refers to "baptism"
   2. to bathe, in this case there is distinction between G3068 (whole person) and G3538 (hands/feet/face). The G3538 however also has a "ceremonial" connotation

Practical examples

G3067 examples

Eph 5:26 That he might sanctify and cleanse it with the washing of water by the word