Forum:Other terms for monster effects

I have a good question to ask. For cards that have the effect "During battle between this attacking card and a Defense Position monster whose DEF is lower than the ATK of this card, inflict the difference as Battle Damage to your opponent." they are refered to as Piercing. Are there any terms for either of the following effects?

"Once per turn during your Main Phase, you can flip this card into face-down Defense Position."

"If this card attacks, it is changed to Defense Position at the end of the Battle Phase. This card's battle position cannot be changed until the end of the next turn, except with a card effect."

If there are terms for them. Please post them. If there isn't, how would one go about making a term for them? I usually call the flip-down monsters Shadows because they keep hiding.