The chapter gives an overview of the similarities as well as the differences between determiner quantifiers (D‐quantifiers) and adverbial quantifiers (A‐quantifiers). While both types of quantifiers have in common that they express relations between sets of elements, they differ in at least two crucial respects. First, the syntax–semantics mapping is rather strict in the case of D‐quantifiers, while it is much more flexible in the case of A‐quantifiers. Second, the domains of quantification are different. D‐quantifiers quantify over whatever set of elements is denoted by the NP they combine with, which is usually, but not necessarily, a set of individuals. Concerning A‐quantifiers, there are good reasons to assume that the members of one class of A‐quantifiers, namely frequency adverbs, quantify over eventualities or situations exclusively. Adverbs of quantity, in contrast, are free to take entities of any kind as their first argument that can naturally be decomposed into parts.