EACH or EVERY
EACH is used for one or more things, taken one by one.
Ex: Each of the two boys was wrong.
EVERY is never used fot two, but always for more than two things, taken as a group.
Ex: She read every book in the library.
Note: EACH and EVERY are always singular
Ex: Each (every) one of the twenty boys has a book.
Farther or Further
Farther and Further are mostly interchangeable, but there is a major difference between them.
We use FARTHER when it is about physical distance.
Ex: He climbed farther up the hill.
We use FURTHER when it is about symbolic distance.
Ex: They need to conduct further research.
Finish or End
TO FINISH (v)– refers to bringing any action into its completion.
Ex: We were hurrying to finish the job.
TO END (v)– refers to termination to any action.
Ex: The Second World War ended in 1945.
Good or Well
GOOD (adj.) – use it to describe a peron, place or thing.
Ex: He is a good painter.
WELL (adv.) – use it to describe an action.
Ex: She paints well.
Recently or Lately
RECENTLY – use it for non-repetive actions.
Ex: I have visited Rome recently.
LATELY: use it for repetitive actions.
Ex: I have been working out lately.