Is naming a plant "Noah's Ark" considered disbelief or a sin, given that it has a different foreign name and the Arabic name is used to facilitate dealings with customers?

The fundamental principle concerning the naming of things is that it falls under permissible and lawful customs. Naming a plant "Noah's Ark" is permissible and there is no harm in it. It is considered an expansion in naming and does not mean that the plant is the actual Noah's Ark; rather, it is merely a name for the plant. The reason for this naming might be the resemblance of its leaves to a ship.