gängig
common
Widespread, usual, or generally known and accepted.
Das ist die gängige Vorgehensweise in solchen Fällen.
That is the common procedure in such cases.

common / movable
Loading your saved state.
common
Widespread, usual, or generally known and accepted.
Das ist die gängige Vorgehensweise in solchen Fällen.
That is the common procedure in such cases.

The adjective 'gängig' (common/movable) is derived from the verb 'gehen' (to go). The basic idea is that something 'goes' well—either because it can be moved easily, or because it is well accepted in society and 'durchgeht' (passes/goes through).
Diese Redewendung ist im Alltag sehr gängig.
This expression is very common in everyday life.
You can recognize the meaning from the noun: If 'gängig' describes an abstract thing such as a method, an opinion, or a practice, it means 'üblich' (usual/common). If it describes a mechanical part such as a lock or a screw, it means 'leicht beweglich' (easy to move).
Das ist die gängige Meinung zu diesem Thema.
That is the common opinion on this topic.
In the meaning 'üblich' (usual/common), 'gängig' is often combined with nouns such as 'Praxis' (practice), 'Meinung' (opinion), 'Verfahren' (procedure), 'Modell' (model), or 'Größe' (size).
Wir verkaufen dieses Produkt in allen gängigen Größen.
We sell this product in all common sizes.
In the mechanical sense, the construction 'etwas gängig machen' (to make something movable again) is very common. It means making sure that something can move easily again, for example with oil or cleaning.
Mit etwas Öl konnte er das rostige Türschloss wieder gängig machen.
With a little oil, he was able to make the rusty door lock movable again.
usual
'üblich' and 'gängig' can both mean that something occurs often and is generally accepted. 'üblich' describes more what is normal or expected in a situation. 'gängig' is often used for words, methods, models, or products that are widespread and used by many people. So 'üblich' fits well with rules, procedures, and behavior. 'gängig' sounds more natural when talking about common forms, terms, or technical solutions.

Für diesen Drucker brauchen wir ein gängiges Kabel, das man in vielen Geschäften bekommt.
For this printer, we need a common cable that you can get in many shops.
In dieser Praxis ist es üblich, vor dem Termin kurz anzurufen.
At this practice, it is usual to call briefly before the appointment.