Unir vs. unificar

In Spanish, 'unir' and 'unificar' both refer to the concept of coming together or becoming one. However, their usage and connotations can be subtly different, reflecting different aspects of unification.

Unir

'Unir' generally means to join or connect separate parts or people together. It often implies a physical or metaphorical connection without necessarily losing individual characteristics.
Vamos a unir las dos mesas para tener más espacio.
(Let's join the two tables together to have more space.)
El puente une las dos ciudades a través del río.
(The bridge connects the two cities across the river.)
La tragedia sirvió para unir más a la familia.
(The tragedy served to bring the family closer together.)

Unificar

'Unificar' refers more specifically to making things uniform or standardized, often implying a more formal or organized process of bringing together under a common standard or set of rules.
El objetivo es unificar los criterios de evaluación en todas las universidades.
(The objective is to unify the evaluation criteria across all universities.)
Se propuso unificar las diferentes áreas de la empresa bajo una única dirección.
(It was proposed to unify the different areas of the company under a single management.)
La nueva reforma busca unificar los sistemas de salud pública y privada.
(The new reform seeks to unify public and private health systems.)

Summary

'Unir' and 'unificar' both describe processes of bringing together, but they differ in focus. 'Unir' emphasizes a connection or joining that respects individuality, while 'unificar' implies a harmonization process that aims for standardization or uniformity.