Construction-functions versus construction-strategies

This paper discusses the contrast between two modes of typological comparison of
grammatical constructions, following a distinction made by Croft (2022): We may
start out from (construction-)functions and consider the diverse
(construction-)strategies that languages use, or we may focus on the strategies themselves
(e.g. reflexive constructions, passives, copula constructions). Both kinds of comparative
concepts are widely employed, but our traditional grammatical terms are often
used in different ways. Here I suggest that we can avoid confusions and arrive at
clearer terminologies if we take this distinction into account, and I discuss the
 concrete example of the term existential construction (best regarded as a
construction-function, not a kind of construction-strategy).