This is the 13104th most frequent Spanish word.
pozos
"Wells" (deep pits or holes to access water or other resources).
Here 'pozos' refers to physical wells as commonly found to access water sources.
Los pozos de agua en el desierto son indispensables para la vida.
Water wells in the desert are indispensable for life.
In this sentence, 'pozos' again represents physical holes dug to access water or other resources.
El abuelo solía hablar sobre los pozos que cavaban en su juventud.
Grandfather used to talk about the wells they dug in his youth.
This sentence uses 'pozos' metaphorically to describe deep and complex emotions.