Chimenea vs. hogar
In Spanish, 'chimenea' and 'hogar' can both relate to the concept of a fireplace or hearth, but they have distinct uses and nuances that set them apart.
Chimenea
Chimenea refers specifically to the structure or appliance that burns wood, gas, or another fuel to provide heat. It commonly means 'chimney' or 'fireplace'.
Encendí la chimenea para calentar la sala.
(I lit the fireplace to heat the living room.)
El humo subía por la chimenea.
(The smoke rose up through the chimney.)
Instalaron una nueva chimenea en la cabaña.
(They installed a new fireplace in the cabin.)
Hogar
'Hogar' originally means 'home', but when it refers to a fireplace or hearth, it emphasizes the warmth and family-centered space traditionally associated with a fireplace.
Nos reuníamos alrededor del hogar en las noches frías.
(We gathered around the hearth on cold nights.)
La abuela cocinaba pan en el hogar.
(Grandma baked bread in the hearth.)
El hogar era el corazón de la casa.
(The hearth was the heart of the home.)
Summary
While 'chimenea' focuses on the physical structure used for burning fuel and heating spaces, 'hogar' conveys a more emotional and traditional sense, centering on warmth, family, and home life.