to become worse as time passes:
deteriorate
to return something to an earlier or original condition by repairing it, cleaning it, etc.:
restore
a liquid that is spread on a surface and that dries to form a hard, shiny coating:
varnish
a shelter in a garden made of boughs of trees or vines:
bower
a place where someone or something is protected or given shelter:
sanctuary
a substance that is released in the body of a person who is feeling a strong emotion (such as excitement, fear, or anger) and that causes the heart to beat faster and gives the person more energy
adrenaline
a specially prepared piece of cloth on which a picture can be painted by an artist:
canvas
an often fuzzy surface growth of fungus on damp or decaying material:
mold
