Im Explaining to the new people in valorant what contact is, since a bunch of animals questioned my answer on mwzera live, I'll explain the types of contact here, cuz i was bored there.
1st - Contact-trade - In this case it is specific if you are marking the spike with a teammate OR, post-plant. In the sense that one of you 2 tries to get information, and when you spot the enemy, you will be the first contact with the enemy, and your partner will come soon after, to make the trade kill. Maybe you're stopped somewhere too, like the bottom of split's bomb B, as an example.
2nd - Moving Contact - This is the case if you try to go together..., either to some position on the map, or to recover the spike, or in case you don't have information about the enemy. In the sense that, as soon as your partner opens a pixel and spots the enemy, you are there to defend.
3rd - Contact in Group - It happens more rarely, but let's say that for some reason you are grouped, with no time to rotate or split and you have already spent a good number of resources. One goes into the other's trade, clearing the positions while the rest focuses on the angles that have not yet been cleared.
To be fair, contact is nothing more than holding hands, either due to lack of resources, or to make a safer move and not give the opponent margin of error
Thank you, ladies and gentlemens.