peninsula
https://gyazo.com/aa2580d1f927f318e812e472398eb570
source: Public Domain
noun
a piece of land almost surrounded by water or projecting out into a body of water.
〖しばしば固有名詞の一部; the ... P-〗半島
ORIGIN
mid 16th century: from Latin paeninsula, from paene ‘almost’ + insula ‘island’.
USAGE
The spelling of the noun as peninsular instead of peninsula is a common mistake. The spelling peninsula should be used when a noun is intended ( the end of the Cape Peninsula), whereas peninsular is the spelling of the adjective ( the peninsular part of Malaysia).