Quoting Commentary for II Chronicles 2:8

And storehouses for the increase Regarding storehouses of increase [of grain] it is appropriate to use the term מִסְכְּנוֹת, storehouses, in all places, like (Exod. 1:11): “store cities (עָרֵי מִסְכְּנוֹת) for Pharaoh,” and so, (above 8:4): “And he built Tadmor in the desert and all the store cities (עָרֵי מִסְכְּנוֹת) that he built in Hamath,” and perforce, they were for grain, because in the desert he did not have to store gold and silver.