Cannot implicitly convert type system.collections.generic.list<> to system.collections.generic.list<>

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C#

MVC5

I am facing this error create db through data module then create a class for call db tables and then create a class to access services and create project but facing error.

What I have tried:

When access database through database first approach automativally created below class

namespace Ecommerce.DBs.Database
{
    using System;
    using System.Collections.Generic;
    
    public partial class Tbl_Category
    {
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
        public Tbl_Category()
        {
            this.Tbl_Product = new HashSet<tbl_product>();
        }
    
        public int CategoryId { get; set; }
        public string CategoryName { get; set; }
        public Nullable<bool> IsActive { get; set; }
        public Nullable<bool> IsDelete { get; set; }
        public bool IsFeatured { get; set; }
        public string ImageURL { get; set; }
    
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
        public virtual ICollection<tbl_product> Tbl_Product { get; set; }

        public List<tbl_product> Products { get; set; }
    }
}

after that i have created 1 more class to access above

namespace Ecommerce.DBs
{
    public class EcomContext : DbContext, IDisposable
    {

        public EcomContext() : base("OnlineShoppingEntities")
        {

        }
        public DbSet<tbl_category> Categories { get; set; }
        public DbSet<tbl_product> Products { get; set; }
    }
}

created a new project and add class with same table name as below

namespace Ecommerce.Entities
{
   public  class Tbl_Category
    {
        public int CategoryId { get; set; }
        public string CategoryName { get; set; }
        public bool IsActive { get; set; }
        public bool IsDelete { get; set; }
        public bool IsFeatured { get; set; }
        public string ImageURL { get; set; }

        public List<product> Products { get; set; }
    }
}

after that created 1 more project with name of services and add class as below

namespace Ecommerce.Services
{
   public  class CategoriesService
    {
        public Tbl_Category GetCategoryID(int id)
        {
            using (var context = new EcomContext())
            {
                return context.Categories.Find(id);
            }
        }

        public List<tbl_category> GetFeaturedCategory()
        {
            using (var context = new EcomContext())
            {
                return context.Categories.Where(x => x.IsFeatured && x.ImageURL != null).ToList();
            }
        }
}}

now finally created a home controller in web project when going to call above class in home controller below error is showing i tried diffrent logics but errro still is same if i remove database first approach then error will be cleared but i need database first approach.

public class HomeController : Controller
{
    <big>CategoriesService categoryService = new CategoriesService();</big>
    public ActionResult Index()
    {
        HomeViewModels model = new HomeViewModels();
        model.Featuredcategories = categoryService.GetFeaturedCategory();
        return View(model);
    }
}
}

Error Shows

cannot implicity convert type system.collections.generic.list<ecommerce.entities.tbl_category> to system.collections.generic.list<ecommerce.entities.category>