最全婚姻周年英文称谓

1st Year: Paper or Clocks
2nd Year: Cotton or China
3rd Year: Leather or Crystal
4th Year: Fruits and Flowers
5th Year: Woodenware
6th Year: Candy
7th Year: Wool or Copper
8th Year: Bronze or Pottery
9th Year: Pottery or Willow
10th Year: Tin or Jewelry
11th Year: Steel
12th Year: Silk or Linen
13th Year: Lace or Furs
14th Year: Ivory or Jewelry
15th Year: Crystal or Watches
20th Year: China or Platinum
25th Year: Silver
30th Year: Pearl
35th Year: Coral or Jade
40th Year: Ruby
45th Year: Sapphire
50th Year: Golden
55th Year: Emerald
60th Year: Diamond
75th Year: Diamond
这是我看到的最全的婚姻周年英文称谓。最高称谓是60周年及以上都是Diamond。
但有些问题我也没有搞不懂，如为什么2周年和20周年都可以称China，3周年和15周年都可以称Crystal，10周年和14周年都可以称Jewelry。也许是不同的地域或国家有各自不同喜好的称谓。