tvrdia
Tvrdiia is a term that can refer to several things, primarily in Slavic languages. Most commonly, it is a grammatical form in several Slavic languages. In languages like Czech and Slovak, "tvrdia" is the feminine plural form of the adjective or noun meaning "hard" or "tough." For example, in Czech, "tvrdá práce" means "hard work" (singular feminine), while "tvrdá jablka" would mean "hard apples" (plural feminine). The meaning is directly related to the physical property of hardness or resilience.
Beyond grammar, the term might appear in other contexts, though less frequently. It could be a surname