Signage
Part of speech: noun
Definition: Signs taken collectively.
Signboard
Part of speech: noun
Definition: A board carrying a sign, or on which signs may be posted.
Signage as a noun is signs taken collectively. while Signboard as a noun is a board carrying a sign, or on which signs may be posted.
Part of speech: noun
Definition: Signs taken collectively.
Part of speech: noun
Definition: A board carrying a sign, or on which signs may be posted.
We hope you now know whether to use Signage or Signboard in your sentence.