Use it when highlighting the absence of something very important for survival or function.

Essential Lack

Often used metaphorically to describe a dire need, not just physical starvation.

Metaphorical Use

Conveys a strong emotional response associated with the urgent need for something.

Highlights a strong desire or requirement for something not present, particularly in social contexts.

Can be used to emphasize or exaggerate the lack of something, like opportunities or funding.

Often expresses a figurative craving or intense lack, especially in emotional or cognitive contexts.