741qwe852asd963zxc said:
Aerial tramway is aerial tramway and is not a tram.
That's your opinion. The primary definition of tram, according to Merriam-Webster, is a carrier that travels on an overhead cable or rails, so it's apparent that someone uses the word for that purpose even if you don't.
Streetcar have a common definition and that definition doesn't fit many pictures that are now tagged as such.
It fits the majority of them, and the rest can be easily cleaned up. Streetcar is rarely used (seriously, it's only 140 posts) so keeping it maintained shouldn't be too much trouble. Your solution of completely replacing a tag because it occasionally gets used incorrectly is like amputating a limb because of a bee sting. You're not solving the problem of streetcar being misused; you're just ensuring that it's impossible to search for actual streetcars without having to dig through images of various other vehicles commonly known as trams.
And I don't think it would be helpful to turn tram into a disambiguation page like wikipedia because I don't know what else can they be called other than as a tram and certainly not a streetcar. The wikipedia disambiguation page is simply listing other systems that are also described as tram in various different locations, and that doesn't mean they are tram.
Please try to understand that words can have multiple meanings. This is a difficult concept for some people to grasp, but it's important to first understand this in order to see my next point. If Alice and Bob use the same word in reference to different things, that doesn't mean that Alice is right and Bob is wrong, or vice versa. They're both using the word correctly within their own contexts. The English language is a very messy thing and this is something that you have to get used to.
"Tram" is one of those words. You acknowledge that different modes of transportation are known as trams in some places, but you then go on to say "that doesn't mean they are tram", and this is just plain wrong. If I'm talking to my neighbors and using "tram" in reference to a light rail system, and they know what I'm talking about because that's what the word is understood to mean in my area, this is fine. We can communicate without any trouble thanks to our common definition of "tram", regardless of what people in other regions think the word means.
On a site with global scope like Danbooru, however, this becomes a problem, because the users here may have dramatically different expectations for how certain words are used. When you take a word with multiple meanings, "tram" in this case, and try to turn it into a tag, that tag becomes a clusterfuck because you're guaranteed to have users tagging images according to their own personal definition of the word rather than whatever our wiki defines it to be. Sites like Wikipedia can get away with using the most common definition of the word for the main article and putting the other meanings in a disambiguation page, because they're only providing encyclopedic information about that word. We can't do this, because we use tags for categorizing things, and using an ambiguous term like "tram" only ensures that it will be used to categorized everything known as a tram, regardless of what definition you happen to agree with.