水雲

• (Tokyo) すいうん [sùíúń] (Heiban – [0])
• IPA^(key): [sɨiɯ̟̃ɴ]

水(すい)雲(うん) • (suiun) 

1. clouds and water

   Synonym: 雲水 (unsui)

2. (by extension) the natural world
3. synonym of 雲水 (unsui, “an ceaseless wandering pilgrimage, a wandering pilgrim”)

• (Tokyo) もずく [mòzúkú] (Heiban – [0])
• (Tokyo) もずく [móꜜzùkù] (Atamadaka – [1])
• IPA^(key): [mo̞zɨkɯ̟]

水雲(もずく) or 水雲(モズク) • (mozuku) 

1. Nemacystus decipiens
2. Any of various chordariaceous species of edible seaweed, including Nemacystus decipiens and Sphaerotrichia divaricata.

As with many terms that name organisms, this term is often spelled in katakana, especially in biological contexts (where katakana is customary), as モズク (mozuku).