The king sat on the throne and read out the proclamation.
first place; top spot; championship
Figurative use for the number-one position in sports, competitions, or rankings.
He has held the shogi championship for many years.
The new product took the top spot in the market.
The prince ascended the throne.
The champion successfully defended his title.
The rookie player seized the championship.
That team has reigned at the top for many years.
首位 is a neutral term for the top rank in any ranking or standings, whereas 王座 carries the image of a 'crown' or title of supremacy, especially in sports.
タイトル is the common loanword for a championship title (as in boxing or wrestling), while 王座 evokes the same idea with a more literary, 'throne'-like image.
王座 can denote the literal throne seat as well as the position of power, whereas 王位 refers strictly to the rank or title itself.
王座 is a separate shogi title awarded through its own tournament, distinct from the 棋聖 title.
championship-deciding contest; final match; the finals
Compound of 王 (king) and 座 (seat). The figurative sense 'top position' developed from the literal meaning.