I am trying to pick my understanding in here.
Training, as I understand, is a directed activity done towards a desired outcome (performance enhancement). For example, improving spoken (English) communication skills, where the desired activity is to enhance an individual's spoken English. It is more towards honing a skill that can lead to the development of the individual and aid in productivity (personal & professional).
Development in the HRD context would be the efforts put in by the company towards furthering the growth of an individual in the organization. It can be done through training, coaching, mentoring, sponsoring continuing education, occupation-related workshops, etc. All development activities are tied to an objective of creating a career path for the individual.