
morgen
tomorrow
Refers to the day that follows today.
Morgen habe ich einen wichtigen Termin.
Tomorrow I have an important appointment.
tomorrow / morning
Loading your saved state.

tomorrow
Refers to the day that follows today.
Morgen habe ich einen wichtigen Termin.
Tomorrow I have an important appointment.

morning
Refers to the time in the morning, that is, the hours after getting up until noon. Usually used together with a time specification or another day.
Wir sehen uns morgen um acht Uhr.
We'll see each other tomorrow at eight o'clock.

future
Refers to an unspecified time in the future.
Die Technik von morgen wird unser Leben verändern.
The technology of tomorrow will change our lives.
The spelling changes the meaning: the adverb 'morgen' (written with a lowercase letter) means 'the next day'. The noun 'der Morgen' (written with a capital letter) means 'the morning'.
Wir fahren morgen in den Urlaub.
We're going on vacation tomorrow.
You can combine the two meanings of 'morgen' (tomorrow/morning). The expression 'morgen Morgen' is correct and means 'in the morning of the next day'.
Unser Flug geht morgen Morgen um 6 Uhr.
Our flight leaves tomorrow morning at 6 o'clock.
To indicate a specific time on the next day, you combine 'morgen' (tomorrow) with a time of day, for example 'morgen früh' (tomorrow morning), 'morgen Mittag' (tomorrow noon), or 'morgen Abend' (tomorrow evening).
Können wir uns morgen Abend im Restaurant treffen?
Can we meet tomorrow evening at the restaurant?
The single word 'morgen' almost always means 'the next day'. To express 'in the morning', people usually use 'am Morgen' (in the morning) or combinations like 'heute Morgen' (this morning) or 'gestern Morgen' (yesterday morning).
Heute Morgen habe ich die Nachrichten gelesen.
This morning I read the news.
In the meaning 'future', 'morgen' is often used in a somewhat elevated or philosophical context. The combination with 'von' is typical: 'die Welt von morgen' (the world of tomorrow).
Wir müssen heute die Grundlagen für die Gesellschaft von morgen schaffen.
We must create the foundations for the society of tomorrow today.
in the mornings
Morgen normally refers to the day after today and therefore to a single upcoming point in time. Morgens, by contrast, refers to a regular or usual time in the morning. Use morgen for the next day and morgens for a habit or recurring action.

Morgen fahre ich mit dem Bus zur Arbeit.
Tomorrow I’m taking the bus to work.
Morgens fahre ich mit dem Bus zur Arbeit.
I take the bus to work in the mornings.