Romance languages are well known for having two conceptualizations of being, expressed by distinct linguistic means; this is the case for Spanish, Catalan, and Portuguese. In contemporary Spanish varieties, in particular, there are two copulas meaning ‘to be’ with largely similar uses: ser ‘to be’, deriving from two Latin verbs, esse, ‘to exist’, and sedere, ‘to be seated’, and estar, ‘to be’, from the Latin verb stāre, ‘to stand’, which developed into auxiliary verbs (with past participles) and copular verbs (with attributive adjectives). It is in Medieval Spanish that ser and estar begun to converge, with texts from the twelfth century illustrating uses of estar in contexts that were previously covered by ser (see Arias, 2005). The expansion of estar is still ongoing in modern Spanish varieties, and is particularly dynamic in Spanish varieties spoken in Latin America.