Seven letter words change one or two letter to make a new word

[Annie-Xmas]

swearer

[Thin_Ice]

weather

[Annie-Xmas]

sweater

[burpo_the_wonder_mutt]

rewards

[Biffster]

dwarves
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[Elendil_s_Heir]

Dwarven

[Thin_Ice]

wharves

[Biffster]

several
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[Thin_Ice]

reverse

[Biffster]

revered
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[Thin_Ice]

adverse

[Biffster]

inverse
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[Thin_Ice]

severed

[Biffster]

several
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[burpo_the_wonder_mutt]

laveuse
(I do not speak French, but somehow I know this word; it means washing machine. If the OP or others wish to rule against it, C’est la guerre, play offa Biffster’s.)

[Biffster]

enslave
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[Thin_Ice]

selvage

[Annie-Xmas]

vaguely

[burpo_the_wonder_mutt]

gravely

[Thin_Ice]

raveled