I hope you have a happy New Year!
Once again, I was able to age this year without issue.
The next year, Erika met a prince riding a white cow.
The kanji and the word are exactly the same. That means they share meanings as well. You can also use this word to talk about someone's age.
Since this word is made up of a single kanji, it should use the kun'yomi reading. When learning the kanji, you didn't learn that reading, so here's a mnemonic to help you with this word:
This year I refuse to watch tosh.0's (とし) show. It is terrible.