What's the difference between the session and the token?

        const result = await this.auth.api.signInEmail({
          ...signInRequest,
        });
        const rslt = await this.auth.api.signInEmail({
          ...signInRequest,
          asResponse: true,
        });
        Logger.log(result, 'Sign in successful');
        Logger.log(rslt, 'Sign in successful');

--------- Log output ---------
[Nest] 71710  - 05/05/2025, 3:09:59 PM     LOG [Sign in successful] Object(4) {
  redirect: false,
  token: 'GYTdAiXcovZHov8n5WrAJSzUKJnN70Qg',
  url: undefined,
  user: {
    id: 'lu2UF4tHqspBXEt88eWJcI81jJeI50iG',
    email: 'dmelenteanu@pvolve.com',
    name: '',
    image: '',
    emailVerified: false,
    createdAt: 2025-05-05T08:50:28.790Z,
    updatedAt: 2025-05-05T08:50:28.790Z
  }
}
[Nest] 71710  - 05/05/2025, 3:09:59 PM     LOG [Sign in successful] Response {
  status: 200,
  statusText: '',
  headers: Headers {
    'set-cookie': 'better-auth.session_token=9V35bVng9vcUOVVPrLRVdLNI1Kklkgxw.LgWuyLrRiDaoJ1oCneeKoXLj5fBHcygnL2HTlikKnQA%3D; Max-Age=604800; Path=/; HttpOnly; SameSite=Lax',
    'Content-Type': 'application/json'
  },
  body: ReadableStream {
    locked: false,
    state: 'readable',
    supportsBYOB: true
  },
  bodyUsed: false,
  ok: true,
  redirected: false,
  type: 'default',
  url: ''
}