anwendbar
applicable
Suitable or appropriate for being used or applied in a specific situation or for a specific purpose.
Diese Regel ist nur auf volljährige Personen anwendbar.
This rule is applicable only to adults.

applicable
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applicable
Suitable or appropriate for being used or applied in a specific situation or for a specific purpose.
Diese Regel ist nur auf volljährige Personen anwendbar.
This rule is applicable only to adults.

The word consists of the verb stem 'anwend-' (from 'anwenden' — to apply) and the ending '-bar'. The ending '-bar' means that something can be done. So 'anwendbar' literally means 'can be applied'.
Die Theorie ist in der Praxis nicht immer direkt anwendbar.
The theory is not always directly applicable in practice.
'Anwendbar' is very often used with the preposition 'auf' and the accusative to say what the applicability refers to.
Das neue Gesetz ist nicht auf bereits bestehende Verträge anwendbar.
The new law is not applicable to already existing contracts.
The adjective is often used in formal, technical, or legal contexts. Typical nouns that can be 'anwendbar' (applicable) are: a rule, a law, a method, or a regulation.
Wir suchen nach einer anwendbaren Lösung für dieses Problem.
We are looking for an applicable solution to this problem.
suitable
'geeignet' and 'anwendbar' can both mean that something fits a situation. 'geeignet' is more general and can refer to people, places, things, or actions. 'anwendbar' is used mainly for rules, methods, solutions, or knowledge that can be applied in a specific situation. A room is 'geeignet' for a course, but a rule is 'anwendbar' to a case. When it is about the practical use of an idea or method, 'anwendbar' sounds more precise.

Die neue Regel ist auch auf ältere Verträge anwendbar.
The new rule is also applicable to older contracts.
Dieses Rezept ist für Kinder geeignet, weil es nicht scharf ist.
This recipe is suitable for children because it is not spicy.