This is the 5995th most frequent Japanese word.
アニバーサリーイヤー
"Anniversary year."
The term 'アニバーサリーイヤー' is used to signify a 'milestone year' or 'anniversary year' for a specific entity or event, such as a company.
今年は会社のアニバーサリーイヤーです。
This year is the company's anniversary year.
Here, 'アニバーサリーイヤー' is applied to represent a year marked as an anniversary for a personal milestone, such as marriage.
彼らは結婚10周年としてアニバーサリーイヤーを祝っています。
They are celebrating their anniversary year as their 10th wedding anniversary.
In this sentence, 'アニバーサリーイヤー' highlights the significance of the year in terms of a celebration or event observance.