Serendipity35

I spent all my years in higher education working in instructional technology. One of the parts of the department I ran with that title was our instructional designers. I think that if you had asked me in the early part of the century what the difference was between instructional design and learning design - a term that was not in use at the start of my higher ed career - I would have said that instructional design is learning design. But today, there is a distinction.

"Learning design" and "instructional design" are closely related fields but learning design pertains to the overarching process of designing learning experiences and environments. It encompasses the full range of the learning process from determining learners' needs to assessment.

Instructional design is a more specific aspect of learning design. It takes the principles of learning and instruction and creates concrete plans for instructional materials and experiences. You may call someone a learning designer but I stay with the instructional designer (ID) being the one crafting course content, activities, and evaluations. 

Learning design includes many kinds of designs - informal, experiential, and self-directed learning. The ID focuses on the actual learning experiences.

A book or course on learning design will present models like ADDIE.  Learning design is holistic design. Instructional design tailors the content and activities for formal learning.