There are multiple languages in the world; as given in the NIN storyline and the whole bit with the Xaela; as they also have a cross-tribal language as well as some also use clicks and whistles.Â
The whole WoL can transcend all language barriers; as for others speaking a familiar language, it does not state for example, how long the Xaela been in Ishgard since Ishgard lands were there, long enough for there to be bloodshed between the Ishgards and Xaela as well as co-existence.
As for other things, language barriers do evolve and dilute, especially when it comes to conquest. It isn't impossible to say, that a language shift would be when the Empire took over Othard and such, as the Empire seems to speak the same language as the Eorzeans, of course their tongue and teaching people that language would come. We have real world examples of that very thing.
But, in the short of it. Its possible, to have different languages, be intermediate, or know fluent Eorzean tongue and other languages tied to their regional differences and sometimes racial influence, such as say, one Xaela's tribe who speaks with clicks and whistles.
The whole WoL can transcend all language barriers; as for others speaking a familiar language, it does not state for example, how long the Xaela been in Ishgard since Ishgard lands were there, long enough for there to be bloodshed between the Ishgards and Xaela as well as co-existence.
As for other things, language barriers do evolve and dilute, especially when it comes to conquest. It isn't impossible to say, that a language shift would be when the Empire took over Othard and such, as the Empire seems to speak the same language as the Eorzeans, of course their tongue and teaching people that language would come. We have real world examples of that very thing.
But, in the short of it. Its possible, to have different languages, be intermediate, or know fluent Eorzean tongue and other languages tied to their regional differences and sometimes racial influence, such as say, one Xaela's tribe who speaks with clicks and whistles.