Hanzi, Fenzi and Yuanzi

I once attended a course called "Kanji Kreativ" at university.
Miss Yamada-Bochynek - the main lecture and founder of this "Kanji Kreativ" programm - divided the chinese characters/character components into 3 groups:

1) Hanzi (漢字; in Japanese: Kanji)
2) Yuanzi (原子; in Japanese: Genshi) and
3) Fenzi (分子; in Japanese: Bunshi)

1) Hanzi lit. means "Han-Characters" (because of the Chinese Han-Dynasty)
These are the "normal" characters.
e.g. 操(cao1 - grasp; operate)

2) Yuanzi lit. means ‘atom’
These are the smallest meaningful components of a Hanzi
eg the Yuanzi of 操(cao1 - grasp; operate) are the following:
扌[variant of手] (shou3 – hand)
3x 口 (kou3 – mouth)
and 木 (mu4 – tree)

3) Fenzi lit. means ‘molecule’
These are like Yuanzi also components of Hanzi, but are also compound of Yuanzi. So they are Yuanzi-grouped components of Hanzi.
eg the Fenzi of 操(cao1 - grasp; operate) are the following:
喿 (sao4 - chirping of birds)
喿 itself also contains another Fenzi,
it’s 品 (pin3 – product; goods)