The first kind of nod (Charge) that goes onto a tarian (shield) is darn(au) (ordinaries/pieces). There is no agreed upon distinction between ordinary and sub-ordinary so they’re listed together here.
Chief - Pen (top)
Fess - Gwregys (belt)
Pale - Piler (pillar)
Cross - Croes
Bend - Band (bend or sash)
Bend Sinister - Band Wrthdro (flipped)
Saltire - Sawtyr
Chevron - Saeth (arrow)
Bordure - Ymyl (border, margin)
Orle - Ffos (moat)
Inescutcheon - Tarianyn (little shield)
Pile - Cwm (valley) for division of the field, pile/cwm does not hit the bottom, but as an ordinary it does.
Flaunches - Ategion (abutments)
Gyron - Petal (petal)
Canton - Canton
Fret - Cwlwm (knot)
Pall - Fforch (fork)