Difference between "Equity research analyst" vs. "Equity analyst" at HF?

I am familiar with sell-side equity research, e.g., JPM, BMLA, Jefferies, Cowen etc. 

Was looking into investment roles at HF, and saw some roles / profiles listed as "investment analyst", "research analyst", "equity research analyst". 

1. Are those different from each other?
2. For  "equity research analyst" or "research analyst" roles at HF:
   1. How do those differ from the SS ER? (roles and responsibilities, comp, competitiveness etc.)
   2. Are those actual investment roles? If not, how do they differ from investor roles?

Thanks.