This is the 515th most frequent Japanese word.
甘
"甘" (あま) means "sweet" or "sweet-tasting."
Here, '甘い' (amai) describes the flavor of the cake, referring to its sweetness.
このケーキは甘いですね。
This cake is sweet.
In this sentence, '甘える' (amaeru) refers to depending on or relying on the leniency or kindness of another.
甘えるのは時と場合によります。
Relying on others depends on the time and circumstances.
Here, '甘い' (amai) is used metaphorically to mean naive or overly optimistic, describing someone's thoughts or views.