The audit procedures ENQUIRY, ANALYTICAL PROCS, INSPECTION, OBSERVATION are used to test the assertions at the FS level, and these procedures can also be called risk assessment procedures.
Analytical procedures flrmpart of riskassess emtn because these can be used at the planning staage of the audit (a figure which has moved a lot since last year is a figure that needs investigation).
The other methods are not risk assessment: they are ways of collecting audit evidence at the FS level.