- 1
Signage is all the signs in a place, taken as a group: the boards, arrows, names, and warnings in a building, a station, a street, or a shop. Designers and shop owners use this word; most people just say the signs. You do not usually say a signage for one board. Though actually, speakers stretch it a little: good signage often means the signs are clear, not only that they are there. It is a practical, slightly official word.
標示、指標系統（店家常說「招牌」；中國大陸設計圈較常說「標識」）
組成sign (a board or mark that tells you something) + -age (the signs taken as a collection). From sign + -age.
同家族的字
- signone board or mark; signage is those signs as a group
原始詞典資料2 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
signagenoun/ˈsaɪnɪd͡ʒ/
- 1
Signs, particularly those imparting commercial, directional, or road traffic information, taken collectively.
- The signage at the airport is designed to point the way clearly to important locations.
- Uniformity must be paramount in all signage and markings and is the only sound basis from which the job of traffic control can be started on any highway system.
- 2
A sign, a signboard.
- [T]he department is basically involved in providing basic amenities and the minimum requirements such as clearing trekking tracks, providing signages, basic accommodation or tents and so on.
- External signages invite customers from different distances. Main signage makes appeal to customers approaching store from a distance of 170–180 feet, and the storefront signages makes impact from a distance of 60–70 feet.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。