The LiLa project aims to build a Knowledge Base of linguistic resources for Latin based on the Linked Data framework, with the goal of creating interoperability between them. To this end, LiLa integrates all types of annotation applied to a particular word/text into a common representation where all linguistic information conveyed by a specific linguistic resource becomes accessible. The recent inclusion in the Knowledge Base of information on word formation raised a number of theoretical and practical issues concerning its treatment and representation. This paper discusses such issues, detailing how they are addressed in the project, and introduces the web application to query the collection of lemmas of the Knowledge Base. A number of use-case scenarios that employ the information on word formation made available in the LiLa Knowledge Base are also presented, particularly focusing on the use of the Knowledge Base to compare the perspectives on word formation in different linguistic resources.