What is "이란\이랑" and how do you use them?
What does "이란" and "이랑" mean? and what's the 'closest' english equivilent

Question

What is "이란\이랑" and how do you use them? 
What does "이란" and "이랑" mean? and what's the 'closest' english equivilent >

Answer

이란 and 이랑, each of words has definitely diffirent meaning.
Koreans use '이란' to ephasize or define the meaning of the words following '이란'.
for example, if we speak '인생이란' then, it means 'Life is...'

and,
이랑 is a conjunction only for nouns.
 ex ) 한국인이랑 캐나다인이랑 = korean and canadian
 사과랑 배랑 = apple and pear

but the important thing is that we can not use it for joining senteces.