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

[burpo_the_wonder_mutt]

Noxema

[chiliwillybing]

expand

[Biffster]

extend

[aceplace57]

expect

[Biffster]

aspect

[Cardigan]

pasted

[chiliwillybing]

patent

[Elendil_s_Heir]

latent

[Biffster]

intent

[chiliwillybing]

tenant

[burpo_the_wonder_mutt]

tenons

[chiliwillybing]

snotty

[Biffster]

spotty

[burpo_the_wonder_mutt]

polyps

[Ignatz]

nylons

[aceplace57]

lonely

[chiliwillybing]

yellow

[Biffster]

mellow

(Have you never been?)

[chiliwillybing]

fellow

[Cardigan]

welled