The Spanish word 'facticidad' (meaning 'facticity') traces back to the Latin verb 'facere' meaning 'to make' or 'to do'. From this verb came the Latin past participle 'factus' ('made, done'), which developed into the Latin adjective 'facticius' meaning 'artificial' or 'made'. This evolved into the Spanish adjective 'facticio' ('artificial'). The word 'facticidad' was then formed by combining 'facticio' with the suffix '-idad' (from Latin '-itas'), which is used to form abstract nouns in Spanish.

Several common Spanish words share this Latin root 'facere'. Some related words include 'hacer' (to do/make), 'hecho' (fact/deed), 'fácil' (easy), and 'factible' (feasible). The connection becomes clear when you consider that all these words relate to making, doing, or the quality of being doable.

Many English words are related to 'facticidad' through the Latin root 'facere'. Some familiar examples include 'fact', 'factory', 'factual', 'facilitate', and 'artificial'. All these words carry meanings related to making, doing, or being made. For instance, a 'factory' is a place where things are made, while something 'artificial' is something that has been made rather than occurring naturally.