[note]coarse-grained / fine-grained

In Computer Science (as you're looking for),

• coarse-grained means 'monolithic'
• fine-grained means 'modulized' or 'devided into smaller pieces'

For examples, there are many kinds of architecture for web services:

• monolithic architecture is coarse-grained architecture.
• microservice architecture is fined-grained architecture.

Those meanings is illustrated in in this article.