The mobility of conservation specialists in Europe and the tenders of contracts on the European level are increasing at the same speed as the public’s interest in their cultural heritage and the preservation measures shown e.g. at the European Heritage Days. But communication is still difficult because the conservation terminology is not yet standardised in Europe and the dissemination to the general population not sufficient. As a result, this consortium of seven institutions from seven different European countries with different languages - supported by associated partners and external experts und with another four European languages - intends to develop a richly illustrated glossary, including informative photos and sketches: concise texts and demonstrative illustrations are designed to help readers quickly grasp and understand each term, even across language barriers. In the end, the glossary will be available to the general public as an inexpensive, not-for-profit print publication and as a free download on the internet. The project specialises in wall paintings and architectonic surfaces because this terminology is of great significance for the most part of our heritage, i. e. historic buildings, their surfaces and decorations: a completely different sector compared with museums and collections. The main activities during the 24-months duration will be to clarify the terminology of the conservation of wall paintings and architectonic surfaces amongst leading European conservation and restoration specialists to get an excellent translation of the terminology in eight, maybe up to twelve European languages (English, French, German, Croatian, Italian, Turkish, Spanish, Romanian, and probably - provided as a voluntary contribution by the associated partners) done by the conservation professionals themselves, to illustrate the terminology and – at least – to communicate this information to the general public, the building trades and the scientific community.