What is the difference between composition and inheritance?

#include <iostream>
using namespace std;
class Engine{
  //engine class has private attribute for horsepower
  private:
    int horsepower;
  public:
    //setter and getter
    void setHorsepower(int x){
      horsepower = x;
    }
    int getHorsepower(){
      return horsepower;
    }
};
class Car{
  //car class has an engine object and another variable as private attributes
  private:
    int model;
    Engine obj;
  public:
    Car(int m, int h){
      model = m;
      obj.setHorsepower(h);
    }
    void display(){
      cout << "Model = " << model << endl;
      cout << "HorsePower = " << obj.getHorsepower() << endl;
    }
};
int main() {
  //making a car object and passing attributes
  Car toyota(2020, 140);
  toyota.display();
  return 0;
}

#include <iostream>
#include<string>
using namespace std;
class Person{
  private:
    string name;
    char gender;
  public:
    Person(string n, char g){
      name = n;
      gender = g;
    }
    void display(){
      cout << "Name : " << name << endl;
      cout << "Gender : " << gender << endl;
    }
};
class Teacher: public Person{
  private:
    string designation;
    double salary;
  public:
    Teacher(string n, char g, string d, double s) : Person(n, g){
        designation = d;
        salary = s;
    }
    void display(){
      Person::display();
      cout << "Designation : " << designation << endl;
      cout << "Salary : " << salary << endl;
    }
};
int main() {
  Teacher obj("Mike Spencer", 'M', "Assistant Professor", 3000);
  obj.display();
  return 0;
}