This is the 4813th most frequent Japanese word.
泡
Bubble; foam.
In this sentence, '泡' refers to bubbles formed in a liquid, indicating the physical noun '泡'.
泡が立ちました。
Bubbles appeared.
Here, '泡' is used metaphorically to describe something transient or fragile.
彼の夢は泡のように消えた。
His dream vanished like bubbles.
In this example, '泡' is used in the compound noun '泡風呂' (bubble bath), showing its application within word formation.