There's such a thing as a lie, but "misinformation" isn't a synonym for "lie". Efforts to fight misinformation are almost always understood to encompass mislead

There's such a thing as a lie, but "misinformation" isn't a synonym for "lie". Efforts to fight misinformation are almost always understood to encompass misleading information - that is, information that's literally true but is used to advance an argument the misinformation checker doesn't think is valid.