Fervor is really just an intense passion heating up. Thus we shouldn’t be surprised that it comes from the Latin root fervere (“to boil”), from which we get the Spanish for the same (“to boil”), hervir.
Thus, the f-r-v of fervor maps to the h-r-v of hervir.
The Spanish “hablar” (“to talk”) comes from the vulgar Latin “fabulari”, also meaning, “to talk” – hence the English, “fable”.
This gets very interesting very quickly, so note:
From the Latin fundus (“bottom”), we get the Spanish fondo (“background”) and hondo (“deep”) — as well as the English profound. After all, when someone says something profound, well, that’s deep.
The mapping of the Spanish f-n-d (or h-n-d) to the English (pro)-f-n-d is straightforward. However, it’s curious that, in hondo, the initial F transformed from Latin into Spanish to an initial H. This is a common pattern, unique to Spanish, that we see in many Latin words as they transformed into Spanish, such as hijo and filial, refuse and rehusar, and higado and fig.
The English fact comes from the Latin factum, meaning “something that happened.” It is thus an exact cognate to the Spanish hacer, meaning “to make.” How?
The root of both is the Latin facere, meaning “to do.” Fact, and the Latin factum, is just the same word in a different tense.
The Latin facere turned into the Spanish hacer, although they superficially sound different. Their relation becomes obvious once we remember that Latin words that began with an initial f- almost always turned into an initial h- when Latin evolved into Spanish.
Therefore the f-c-r of facere maps exactly to the h-c-r of hacer.
A “shooting star” in Spanish is an estrella fugaz. Since estrella means “star”, then fugaz is the parallel to “shooting.”
The mapping is obvious with the f-g retained in both versions.
Thus, in Spanish, a shooting star is literally, a fleeing star. But fleeing from what?