קַרְתָּן

Based on the provided data, the word "qar.tan" with a Strong's number of H7178 is a proper noun referring to a person named Kartan. As it appears only once in the Bible, its usage is quite limited. This single occurrence does not provide any information about the person's significance, social status, or characteristics, as the text context is not specified. The fact that Kartan is classified as a proper name in the Hebrew lexicon indicates a personal reference, likely indicating an individual or possibly a place associated with a person (e.g., a family home or settlement). Without more information, it is challenging to determine Kartan's importance or relevance in biblical narrative.