after vs then

after

• Behind; later in time; following. 

• At or towards the stern of a ship. 

• In pursuit of, seeking. 

• In allusion to, in imitation of; following or referencing. 

• In spite of. 

• Behind. 

• Next in importance or rank. 

• Denoting the aim or object; concerning; in relation to. 

• Subsequently to; following in time; later than. 

• Used to indicate recent completion of an activity 

• As a result of. 

• Signifies that the action of the clause it starts takes place before the action of the other clause. 

then

• Soon afterward. 

• Next in order of place. 

• At that time. 

• In addition; also; besides. 

• At the same time; on the other hand. 

• Used to contradict an assertion. 

• In that case. 

• Being so at that time. 

• That time