Because how many words do you need for "taco"?
I mean, it's pretty specific, and you can add all sorts of modifiers:
- fish taco
- chicken taco
- beef taco
- taco supreme
- choco-taco
- etc.
So, between the ability of the English language to heavily "overload" words – with prefixes, suffixes, hyphenates and descriptive adjectives – and the inherent self-expression allowed by choosing a unique combination of toppings and condiment sauces, the single word "taco" can express basically every form of platonic, romantic, or carnal love imaginable.
I only speak English, Japanese, and a smattering of French, though – so I really can't say how common it is for there to be multiple root words for this amazing gastronomical treat across the entire globe.
Why does the English language only have one word for love?