This is the 411th most frequent Icelandic word.
áherslu
Emphasis.
In this sentence, 'áherslu' refers to the importance or stress placed on something, indicating focus or priority.
Kennarinn lagði mikla áherslu á skýringuna.
The teacher put great emphasis on the explanation.
In this instance, 'áherslan' (a related form of 'áherslu') demonstrates where the focus or importance lies within a situation or statement.
Áherslan í máli hans var á að bæta þjónustu.
The emphasis in his speech was on improving service.
Here, 'áherslu' is used to denote the act of highlighting or prioritizing a particular aspect, in this case, quality.