beladen
to load
To load freight, goods, or luggage onto a means of transport such as a vehicle, ship, or animal.
Die Arbeiter beladen den LKW mit den Umzugskartons.
The workers are loading the truck with the moving boxes.

to load / burden
Loading your saved state.
to load
To load freight, goods, or luggage onto a means of transport such as a vehicle, ship, or animal.
Die Arbeiter beladen den LKW mit den Umzugskartons.
The workers are loading the truck with the moving boxes.

'Beladen' (to load/burden) is an inseparable verb. The prefix 'be-' always stays attached to the verb stem, including in main clauses and in the past participle ('beladen').
Wir beluden das Auto mit unseren Koffern und Taschen.
We loaded the car with our suitcases and bags.
The verb 'beladen' (to load/burden) is almost always used in the structure 'jemanden/etwas (accusative) mit etwas (dative) beladen' (to load/burden someone/something with something). What is being loaded is in the dative after the preposition 'mit'.
Der Esel wurde mit schweren Säcken beladen.
The donkey was loaded with heavy sacks.
In the figurative sense, the past participle ('beladen') is often used like an adjective. It then describes a state and is combined with abstract nouns such as 'Sorgen' (worries), 'Schuld' (guilt), or 'Verantwortung' (responsibility).
Nach dem Gespräch ging er, schwer mit Sorgen beladen, nach Hause.
After the conversation, he went home heavily burdened with worries.
to invite / load
'einladen' and 'beladen' both have to do with loading things. You use 'einladen' when you put luggage, goods, or other things into a vehicle or container. 'beladen' puts more emphasis on the vehicle or means of transport that then carries a load. For example, you can 'einen LKW mit Kisten beladen' (load a truck with boxes). The words can be confused because both contain the word part 'laden'. The important point is: 'einladen' focuses more on the movement into something, while 'beladen' focuses more on the means of transport with its load.

Zum Umzug beladen sie den Transporter mit Möbeln und Kartons.
For the move, they load the van with furniture and boxes.
Vor der Reise lädt Mia die Koffer in den Wagen ein.
Before the trip, Mia loads the suitcases into the car.