The latter is a distance based method but the comparative method considers language characters directly.The lexicostatistics method is a simple and fast technique relative to the comparative method but has limitations that are discussed below.
This is merely one application of lexicostatistics, however; other applications of it may not share the assumption of a constant rate of change for basic lexical items.
It can be validated by cross-checking the trees produced by both methods.
Lexicostatistics was developed by Morris Swadesh in a series of articles in the 1950s, based on earlier ideas, the concept's first known use was by Dumont d'Urville in 1834 who compared various "Oceanic" languages and proposed a method for calculating a coefficient of relationship.
Whereas the comparative method used shared identified innovations to determine sub-groups, lexicostatistics does not identify these.
Lexicostatistics is a distance-based method, whereas the comparative method considers language characters directly, the lexicostatistics method is a simple and fast technique relative to the comparative method but has limitations (discussed below).