The number of factors account for the differences between the two scores
2. To take into account - to take into consideration, consider
You have to take into account that there are some other responsibilities in your life except your education
3. By all accounts - according to what one has heard or read. Be careful using this word, as it is formal and more appropriate to use in writing rather than in speaking.
By all accounts, the government has been declining in medical aid for its citizens
4. On account of - to introduce the reason or explanation for something.
Synonym: "because of", but "on account of" is more formal.
The shop was closed on account of the heavy snow