This is the 298th most frequent Hindi word.
लत
Addiction or habit.
In this context, "लत" is used to describe a dependency or addiction to a substance, which has a negative connotation.
धूम्रपान की लत स्वास्थ्य के लिए हानिकारक है।
The addiction to smoking is harmful to health.
The word "आदत" here means a habitual practice or inclination towards something, emphasizing a recurring action.
उसे मुसीबतों से जूझने की आदत सी लग गई है।
He has developed a habit of dealing with troubles.
Here, "लत" conveys a strong liking or urge to engage in a particular activity, in this case, reading.