Maybe add these entries? Train holds car: auto train -> cartrain. Train holds house: sleeper car -> housetrain. Train holds boat: boat carriage -> boattrain. Ca

Maybe add these entries? Train holds car: auto train -> cartrain. Train holds house: sleeper car -> housetrain. Train holds boat: boat carriage -> boattrain. Car holds train: heavy train trailer -> traincar. House holds train: engine shed -> trainhouse. Boat holds train: train ferry -> trainboat. Train holds train: transporter wagon -> traintrain.