Playing the harlot: this probably refers to cultic prostitution (see 19.29).
Profanes: see 19.29.
Burned with fire: that is, put to death by means of fire. See 6.30.
Quoted with permission from Péter-Contesse, René and Ellington, John. A Handbook on Leviticus. (UBS Helps for Translators). New York: UBS, 1990. For this and other handbooks for translators see here .