Types of Modules in Oracle apps

Module: Module is nothing but one application it contains forms, reports and programs which are related for specific business functionality.

Example: PO - Module - This will be used to capture purchasing information like suppliers. Their contact details, supplying material, unit price and discounts and so on.

ERP: Enterprise Resource planning

Financial: 
       AP - Account Payable
       AR - Account Receivables
       FA - Fixed assets
       CM - Cash Management
       GL - General Ledger
       PA - Project Accounting

Manufacturing:
      PO    -      Purchase Order
      Inv   -      Inventory
      WIP -       Work in Process
      BOM -      Bill of Material
      OM   -      Order Management
             -      Production
             -      MRP Schedules
             -      Enquiring

HRMS:
       -      People
       -      Payroll
       -      Benefits
OTL -     Oracle Time & Labor

CRM:
      Customer Relationship and management
      Tele Services
      Service Contract
      Mobile Process

CRM

Oracle Marketing

Oracle Sales

Oracle Services Contracts

Oracle Partner

Oracle Install Base

Relationship Management

Analytics

HRMS

Core -HR

Payroll

Self-Service

Advanced Benefits

OTL

Ilearning (OTA)

Irecruitment

HR Intelligence

PROJECTS

Daily business intelligence for projects

Billing

Collaboration

Contracts

Costing

Portfolio Analysis

Time and Labor

Project Resource Management

FINANCIALS

General ledger

Assets

Cash management

Payables / receivables

Financial analyzer

Enterprise planning & budgeting

MANUFACTURING

Inventory

Bill of materials

Work in progress

Engineering

Mrp

Cost

SCM

Procurement

Manufacturing

Order management

Product lifecycle management

Supply Chain Execution & Planning

Logistics