What is the difference between "procurement" and "tendering"?

there is more points defference between it

Proccedure procurment will be as :

a) On receipt of Material Requisition, the Purchaser will immediately obtain quotations bysending the enquiry by e-mail/ letter to approved suppliersb) Upon receipt of quotations, the Purchaser will place the order after ensuring prices are mostcompetitive and also comparing with previous prices for similar items.

Procedure tendering :

The Procurement Manager shall keep an approved list of all sub-contractors for tendering this list to be updated regularly and published quarterly to all interested parties. The approved list of subcontractors and suppliers for each subsidiary company  shall be sent by the subsidiary company Procurement Manager to the QHSE Managerin the subsidiary company and QHSE Manager quarterly. At each stage of the project checking shall be made by the Procurement Manager to ensurethese procedures are strictly being followed including:a.) Estimating stageThe estimation Manager has the responsibility to use only Companies from the approved listand shall always notify the Procurement Manager of any new Companies to be added to theApproved List following an interview and completion of a questionnaire.b.) Project StageAt Project Award, the Project Manager together with the Commercial Manager andProcurement Manager shall have the responsibility to prepare a Procurement Plan and shall

also review the proposed Companies to be used as sub-contractors. Upon undertaking thereview if the proposed company is not on the Approved List then the Project Manager shallarrange for the proposed sub-contractor to complete the Questionnaire.c.) Pre-placing the sub-contractFollowing approval, the Questionnaire will be signed by the Project Manager, CommercialManager and the Procurement Manager prior to placing a sub-contract order the ProjectManager and Commercial Manager shall meet with the sub-contractor and complete thesub-contractor Pre-order meeting Agenda .d.) Registration of the sub- contractorThe Project Manager shall submit the completed Questionnaire to the ProcurementManager for placement on the approved list.e.) Audit of Suppliers and Sub-contractorsThe QHSE Manager shall undertake audits of suppliers and sub-contractors as requiredand shall issue feedback reports to the Project Managers, Commercial Manager and theProcurement Manager. The general guidelines in this procedure shall equally apply to the Procurement of subcontractorswhere the guideline is applicable.

Procurement is the process of buying goods, works or services.
Procurement is often carried out by the process of tendering, rather than buying products directly from a seller.
A company or organisation (the promoter, client or employer) wishing to obtain goods or services will first specify its requirements.
Subsequently, it will open the bidding in a process known as tendering.
Interested companies can then submit their proposals to the client (often a local government) to meet these requirements.
The government offering the tender will then evaluate the bids to decide which offer best suits its requirements.
The company that has been successful in the tender process will perform the work by contract.

Procurement is the whole series of activities resulting in acquisition of goods and services, as per requirement.
Tendering is one formal method through which buyers and sellers are linked together for a possible business relationship.
The buyer puts together compete detail of the requirement including all specifications, terms and conditions in one set of documents known as Tender enquiry documents and issues the same to prospective bidders, for inviting bids.
Procurement may take place with or without entering into tendering process, dpending upon discretion of the buyer.

procure what to buy and tender where to buy with the best result of savings and then a whole business profit ...

Tendering is a step that leads to accomplishing the task of procurement. 
Procurement itself is a broader term and ecompasses various steps depending upon the finanacial effects.

Tendering is one of the process which can be followed for procurement.
Procurement involves a bidding process called Tendering