language

language /ˈlæŋgwɪʤ/ noun
plural languages
language
/ˈlæŋgwɪʤ/
noun
plural languages
Britannica Dictionary definition of LANGUAGE
1 
a  [noncount] : the system of words or signs that people use to express thoughts and feelings to each other — often used before another noun — see also body language
b  [count] : any one of the systems of human language that are used and understood by a particular group of people
— see also sign language
2 
[noncount] : words of a particular kind
3 
[noncount] : the words and expressions used in a particular activity or by a particular group of people
4 
[count] : a system of signs and symbols that is used to control a computer
5 
[count] : a system of sounds or movements by which animals communicate with each other

speak/talk the same language

: to understand each other well because of shared ideas and feelings