Six-letter words - change zero to two letters make a new word (Part 1)

[Cardigan]

trains

[rippingtons_fan]

traits

[aceplace57]

strait

Connects two bodies of water.

[Ferris]

davits

[Kedikat]

vistas

[aceplace57]

siesta

[Kedikat]

strays

[Biffster]

tassel

[aceplace57]

vessel

[burpo_the_wonder_mutt]

valise

[Ignatz]

vanish

[rippingtons_fan]

punish

[Ignatz]

perish

[aceplace57]

zipper

[burpo_the_wonder_mutt]

!!Prizes!!

[aceplace57]

arises

[Prof.Pepperwinkle]

prisms

[Cardigan]

sprint

[Ferris]

toxins

[aceplace57]

toxics

I was unsure about making it plural. I checked and a synonym for toxics is poisons. The poisons in the soil make vegetable gardening dangerous. You could substitute toxics.