"Were contiguous" describes two or more things that are directly adjacent or touching each other. Some synonyms for this phrase could include "were adjoining," "were bordering," "were next to," or "were connected." Other phrases that could be used to convey the same idea might include "were in close proximity," "were neighboring," or "were side-by-side." Depending on the context, other words or adjectives could also be used to describe the relationship between the objects or areas in question, such as "abutting," "adjacent," or "connected at the border." By choosing the right word or phrase, writers can convey the exact nature of the connection between two objects or areas in a more precise and succinct way.