Nouns

(n)burning, combustionthe act of burning something“the burning of leaves was prohibited by a town ordinance”
(n)burn, burningpain that feels hot as if it were on fire
(n)combustion, burninga process in which a substance reacts with oxygen to give heat and light
(n)electrocution, burningexecution by electricity
(n)burninga form of torture in which cigarettes or cigars or other hot implements are used to burn the victim's skin

Adjectives

(s)burningof immediate import“burning issues of the day”