difference

difference /ˈdɪfrəns/ noun
plural differences
difference
/ˈdɪfrəns/
noun
plural differences
Britannica Dictionary definition of DIFFERENCE
1 
: the quality that makes one person or thing unlike another
[noncount]
[singular]
◊ To tell the difference between two people or things is to see how they are unlike each other.
2 
[count] : something that people do not agree about : a disagreement in opinion
3 
[count] : the degree or amount by which things differ

make a difference

1 
: to cause a change : to be important in some way
2 
: to do something that is important : to do something that helps people or makes the world a better place

same difference

chiefly US, informal
— used to say that two things are not really different in any important way

split the difference

— see 1split

what's the difference?

1 
— used to ask how one thing is different from another
2 
or what difference does it/that make? — used to ask why something is important or to suggest that something is not important