In a scientific name,what taxonomic category does the second word represent?

Which of the following is not a broad category in the taxonomic hierarchy?

Which of the following statements is correct regarding nomenclature?

Four statements are given below regarding the nomenclature of organisms. Which two statements are correct?
$(1)$ The first name denotes the species and the second denotes the genus.
$(2)$ $A$ species name used for one organism cannot be used for another organism.
$(3)$ Each word in a handwritten scientific name must be underlined.
$(4)$ It is mandatory to write the sub-species name after the species name for every organism.

Characteristics which delimit a family are more general than those which delimit a

Species are considered as