链接, 连接, 连结, 联接, 联结 - lianjie - is it a joke and if not, what's the difference?
There is a story.

There is a Japanese cellphone game called “Princess Connect! Re:Dive” (プリンセスコネクト! Re:Dive). Before it was officially released in China, people are discussing which is the correct translation of the name, because in the context all these words have almost the same meaning "connected". But when it is released the official name 公主连结 is the least discussed, as if the company is trying to avoid people's expectation. Any way, folks are calling it 公主焊接(princess weld) now.

Beyond the story:

break the words:


链: originally means a chain, but now more refer to a internet link
连: physical connection (from distance)
联: abstract connection
接: connect by touching
结: knot


The words:


链接: link to, internet related word
连接: connect, more physically, but can infer abstract connect
连结: physically tie the knot, metaphor for spiritual connection.
联接: abstract connection between people
联结: a combination of 联接 and 连结, spiritually tie the knot, same as spiritual connection.


Usage:


链接 is almost always used under internet context
连接 can be physical or abstract, but usually not between people
连结, 联接 and 联结 are usually abstract, where 连结 and 联结 are mostly for people relationships.


In Chinese, verbs can be used as nouns. Here is the case.