Rest stroke and free stroke

In classical guitar we have two ways of plucking the strings; rest stroke where the string is plucked by a push of the finger or thumb which then rests on the adjacent string, and free stroke where the finger plucks free of the next (thicker) string. Rest stroke gives a warmer, fuller tone and is used for single-line melodies; to help a melody stand out from an accompaniment, or to accent or emphasise a single note.