1. When adding a contact, what is the difference between "Company name" and " Contact Display Name". 

I could find only the  Contact Display Name displayed everywhere (invoice, bills etc.. and in invoices Customer name  field when trying to create an invoice). Where is the company name used?

Ideally shouldn't the Company name be displayed in invoice ? and  Contact Display Name be used to display within Zoho Books ?

2. Customer name suggestion (maybe other suggestions too) while creating invoice does not work when searched for text in-between.

      Eg: I have a customer with name as "M/S Zoho Corporation". If i search for "zoho" the suggestion does not include the "M/S Zoho Corporation" customer. Can this behavior be changed to search in-between the names ?