This is the 9969th most frequent Japanese word.
越境
"越境" means "crossing a border" or "border transgression."
Used as a noun meaning crossing borders or traveling across boundaries.
私は越境の旅を計画しています。
I am planning a journey across borders.
Used as a verb form expressing an action of crossing boundaries, often metaphorical as entering new opportunities.
彼は越境して新しい市場に進出した。
He crossed borders and expanded into a new market.
Used as an adjective describing interactions or activities that span across borders or boundaries.