Usages of yeonrakhada
인터넷 앱으로 친구에게 연락해요.inteones aebeuro chinguege yeonrakhaeyo.
I contact a friend through an internet app.
어제 친구에게 연락했어요.eoje chinguege yeonrakhaesseoyo.
I contacted my friend yesterday.
Elon.io is an online learning platform
We have an entire course teaching Korean grammar and vocabulary.