That's up to the son, if he's at the age where he's competent enough to make decisions.
Senior- for the father Junior- for the son III- for the grandson
Yes You may be talking about a guy whose legal name is Junior. This is not usually the case. When a boy is named after his father, he will often sign his name with 'jr' at the end, and he is often called Junior as a nickname. Junior would be an unusual legal name, especially if it is his father's name as well. His father would be Junior Senior, and he would be Junior Junior. Imagine if their family name is Senior. they would be Junior Senior Senior, and Junior Senior Junior. If the son is in the military, he might be Major Junior Senior, Junior, Camp Jejune.
Senior or, if someone is the "Peter Junior", then the father is Peter (not necessary to write senior).
Robert downey senior
If the senior father is still alive you can name the new son with a third on end. It would go like; John Henry Smith, III ( third)
Junior Senior ended in 2008.
Junior Senior was created in 1998.
Junior Senior - film - was created in 2003.
It depends on how it is being used, but in most times no, it will not be capitalized. If you're using the word to distinguish between a father and son of the same name, then you capitalise it, For example: John Smith Senior John Smith Junior
Senior , more senior , most senior Junior , more junior , most junior Superior , more superior , Most superior Inferior , more inferior , most inferior
Junior yr - 3th yr Senior yr- 4th(final) yr & Junior/Senior CGPA means the avg of third and fourth yr
Senior and Junior are for successive generatons, such as father and son. "II" is used for same name but NOT successive generation such as a grandson.