The term E-CIGARETTE'S LACK is composed of two words: 'ASH' (3 letters) and 'ASHES' (5 letters). The word 'ASH' is a noun that refers to the powdery residue left after something has been burned. It is typically gray or black in color. The word 'ASHES' is the plural form of 'ASH' and refers to the same powdery residue left after something has been burned, but in larger quantities. In the context of e-cigarettes, the lack of ASH refers to the fact that e-cigarettes do not produce any ASH when they are used, unlike traditional cigarettes which produce ASH when they are smoked.