name of category change in different area Layout

I se ethere is many item name ( product category, taxation category, order status manufacturer)
I try to undertstand logic behind category and have question :



1) does Brand is synonym of manufacturer


2) Does the import content work only for product ?
Is there a way to import for the others items ? I ll expect brand since it appear in "menu" products ->products


3) Does the 4 default directories ( categories) are predefine and we don''t have to modify them ? (it seem we can ...)


4) Does all the columns values that can be use in the csv for import product are all locate define in table hikashop_product ?
Is there other column name that can be use in csv for import product and not define/store in hikashop_product table ?
an other way to express will be does hikashop_product table is the only table that is populate ? ( no ohter table change when insert items values ? it seem hikashop_category change occur but is there another one ? (language))


regard's