For Lucy's spirit blade, it will be
Weapon name: Nasumaru
Weapon type: chained whip blade
Spirit name: nashi
Spirit type: fire celestial demon
Spirit gender: female
Elemental type: fire, celestial

For Erza's spirit blade it will be
Weapon name: reitinmaru
Weapon types: twin katana
Spirit name: reiki
Spirit type: transformable beast
Spirit gender: male
Elemental type: null

Since there's no suggestion, i shall name them myself.

One of ideas of the names came from people that's i had followed

These are the people that help me came up with the ideas.

NashiDragneelShip
nashi___dragneel
Official_Nashi_