
erwachen
to awaken
To wake up from sleep; to regain consciousness. Often used in elevated or literary language.
Als sie erwachte, schien die Sonne bereits durch das Fenster.
When she awoke, the sun was already shining through the window.
to awaken
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to awaken
To wake up from sleep; to regain consciousness. Often used in elevated or literary language.
Als sie erwachte, schien die Sonne bereits durch das Fenster.
When she awoke, the sun was already shining through the window.

to awaken
In a figurative sense: to arise, begin, or develop. Often refers to feelings, interests, or social movements.
Nach der langen Krise erwachte die Wirtschaft langsam wieder zum Leben.
After the long crisis, the economy slowly awakened to life again.
The verb 'erwachen' (to awaken) is inseparable. The prefix 'er-' remains firmly attached to the stem 'wachen' in all sentence forms and is not placed at the end of the sentence.
Jeden Morgen erwacht er um Punkt sieben Uhr.
Every morning he awakens at exactly seven o'clock.
The perfect tense of 'erwachen' (to awaken) is always formed with the auxiliary verb 'sein' (to be). The reason is that the verb describes a change of state—from sleeping to being awake.
Nach einem langen Winterschlaf sind die Bären wieder erwacht.
After a long hibernation, the bears have awakened again.
In the meaning of 'aufwachen' (to wake up), 'erwachen' (to awaken) belongs to an elevated, often literary or poetic style of speech. It sounds more formal and less everyday.
Der Prinz küsste Dornröschen, worauf sie aus ihrem hundertjährigen Schlaf erwachte.
The prince kissed Sleeping Beauty, whereupon she awoke from her hundred-year sleep.
You can recognize the figurative meaning from the subject of the sentence. If it is an abstract concept such as 'Interesse' (interest), 'Hoffnung' (hope), or 'die Natur' (nature), it almost always means arising or beginning.
Im Frühling erwacht die Natur zu neuem Leben.
In spring, nature awakens to new life.
to arise / to cover
Both words can express that a feeling, interest, or movement begins. aufkommen usually describes this emergence neutrally, while erwachen more strongly suggests that something previously dormant becomes active. Use aufkommen for an objective description and erwachen for this figurative nuance.

Nach dem Gespräch erwachte in der Gruppe neue Hoffnung.
After the conversation, new hope awakened in the group.
Nach dem Gespräch kam in der Gruppe wieder Hoffnung auf.
After the conversation, hope arose in the group again.