akaunting/resources/lang/en-GB/bills.php

<?php

return [

    'bill_number'       => 'Bill Number',
    'bill_date'         => 'Bill Date',
    'total_price'       => 'Total Price',
    'due_date'          => 'Due Date',
    'order_number'      => 'Order Number',
    'bill_from'         => 'Bill From',

    'quantity'          => 'Quantity',
    'price'             => 'Price',
    'sub_total'         => 'Subtotal',
    'discount'          => 'Discount',
    'tax_total'         => 'Tax Total',
    'total'             => 'Total',

    'item_name'         => 'Item Name|Item Names',

    'show_discount'     => ':discount% Discount',
    'add_discount'      => 'Add Discount',
    'discount_desc'     => 'of subtotal',

    'payment_due'       => 'Payment Due',
    'amount_due'        => 'Amount Due',
    'paid'              => 'Paid',
    'histories'         => 'Histories',
    'payments'          => 'Payments',
    'add_payment'       => 'Add Payment',
    'mark_received'     => 'Mark Received',
    'download_pdf'      => 'Download PDF',
    'send_mail'         => 'Send Email',

    'status' => [
        'draft'         => 'Draft',
        'received'      => 'Received',
        'partial'       => 'Partial',
        'paid'          => 'Paid',
    ],

    'messages' => [
        'received'      => 'Bill marked as received successfully!',
    ],

];