Here opps is a custom object, i replace this one with standard , but also i get same error invalid type. 
I fetch the data from 3 objects where the name field value is given by me. If i delete the 3rd object i got the result. Why Its not work on 3 objects. 
Plz Help me guys to overcome this problem.

Visual force Page :

<apex:page controller="apmult" >
    <apex:form >
        <apex:pageBlock >
            <apex:pageBlockSection title=" Enter the Value">
                <apex:outputText value=" Enter Name "></apex:outputText>
                <apex:inputText value="{!aname}"/>
                <apex:commandButton value=" SUBMIT " action="{!save}"/>
            </apex:pageBlockSection>
            <apex:pageBlockSection title=" Display Account Records ...{!lac}">
                <apex:pageBlockTable value="{!arecs}" var="item">
                <apex:column value="{!item.id}"/>
                <apex:column value="{!item.name}"/>
                <apex:column value="{!item.phone}"/>
                </apex:pageBlockTable>
            </apex:pageBlockSection>
            
            <apex:pageBlockSection title=" Display Lead Records ...{!llc}">
                <apex:pageBlockTable value="{!lrecs}" var="item">
                <apex:column value="{!item.id}"/>
                <apex:column value="{!item.name}"/>
                <apex:column value="{!item.phone}"/>
                </apex:pageBlockTable>
            </apex:pageBlockSection>
            
            <apex:pageBlockSection title=" Display Oops Records ...{!loc}">
                <apex:pageBlockTable value="{!orecs}" var="item">
                <apex:column value="{!item.id}"/>
                <apex:column value="{!item.name}"/>
                <apex:column value="{!item.phone}"/>
                </apex:pageBlockTable>
            </apex:pageBlockSection>
          </apex:pageBlock>
       </apex:form>
</apex:page>

APEX CODE :

public class apmult {
    public string aname{set;get;}
    public list<account> arecs{set;get;}
    public list<lead> lrecs{set;get;}
    public list<opps__c> orecs{set;get;}
    
    public integer lac{set;get;}
    public integer llc{set;get;}
    public integer loc{set;get;}
    
    public void save(){
        arecs=[select id,name,phone from account where name=:aname];
        
        lac=arecs.size();
        
        lrecs=[select id,name,phone from lead where name=:aname];
        
        llc=lrecs.size();
        
        orecs=[select id,name,phone from account where name=:aname];
        
        loc=orecs.size();
    }

}